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Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1977
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 28.05 & 57.87 & 116.6 " 29.77 & 362.5 " 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 27.18 & 130.4 & 101.2 " 35.89 & 408.0 " 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 35.64 & 205.2 " 86.17 & 37.13 & 311.8 " 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 34.09 & 167.4 " 75.06 & 48.30 & 202.0 " 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 34.87 & 161.0 " 67.26 & 44.99 & 135.3 " 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 34.91 & 132.9 " 61.66 & 40.96 & 93.27 & 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 37.29 & 107.0 " 64.83 & 35.18 & 68.09 & 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 36.78 & 164.5 " 76.44 & 30.60 & 50.41 & 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 32.71 & 319.3 " 67.86 & 29.10 & 44.11 & 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 29.92 & 462.9 " 66.16 & 32.56 & 39.46 & 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 0.014& 28.58 & 945.3 " 59.72 & 34.73 & 35.06 & 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 13.22 & 28.03 &1608 " 58.40 & 25.99 & 27.78 & 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 49.51 & 29.77 &1444 " 59.21 & 22.20 & 19.49 & 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 50.20 & 30.53 &1034 " 52.52 & 20.61 & 14.24 & 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 63.13 & 34.89 & 848.8 " 50.21 & 17.91 & 11.85 & 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 115.3 & 32.49 & 668.1 " 46.30 & 14.91 & 10.29 & 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 111.1 " 49.76 & 490.3 " 46.94 & 13.91 & 7.580& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 111.6 " 71.21 & 391.8 " 46.09 & 12.50 & 6.355& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 84.53 & 101.4 & 409.9 " 45.94 & 11.46 & 4.226& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 65.57 & 110.1 " 444.8 " 40.91 & 10.81 & 2.822& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 58.67 & 144.0 " 410.1 " 36.18 & 9.021& 1.896& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 48.03 & 188.2 " 398.3 " 36.20 & 7.703& 1.205& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 41.04 & 152.5 " 332.3 " 35.80 & 7.614& 1.357& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 33.94 & 151.8 " 262.1 " 35.27 & 5.613& 2.098& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 30.75 & 126.9 " 222.5 " 34.03 & 4.646& 0.900& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 31.68 & 100.0 " 200.7 " 32.03 & 3.927& 0.300& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 30.28 & 79.69 & 187.2 " 32.51 & 3.973& 0.057& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 27.48 & 65.41 & 165.2 " 32.78 & 3.278& 0.001& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 25.22 & 55.05 & 151.3 " 30.61 & 1.505& 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 24.40 & 48.98 & 137.4 " 30.37 & 243.0 & 0.000& 0.000& 30
31 0.000& 0.000& 0.000& 43.54 & 126.0 " 442.6 " 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 33.86 & 64.67 & 412.5 & 54.18 & 41.37 & 62.08 & 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 28.88 & 37.29 & 262.1 & 48.58 & 20.61 & 11.07 & 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 115.3 & 188.2 &1608 & 116.6 & 442.6 & 408.0 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 27.18 & 57.87 & 30.37 & 1.505& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 1015 & 2004 &12788 & 1625 & 1282 & 1862 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 56.38 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 20580 &
Maximum Minimum
Daily 1608 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1978
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.00& 0.00& 12.05& 0.00& 0.00& 57.19& 931.4 " 1470 " 621.7 " 182.4 " 4.93& 0.00& 1
2 0.00& 0.00& 17.40& 0.00& 0.00& 71.66& 804.5 " 1261 " 518.7 " 199.6 " 6.34& 0.00& 2
3 0.00& 0.00& 17.49& 0.00& 0.00& 71.31& 519.1 " 1066 " 432.7 " 247.7 " 5.27& 0.00& 3
4 0.00& 0.00& 11.58& 0.00& 0.00& 60.36& 381.2 " 968.7 " 387.5 " 608.1 " 3.54& 0.00& 4
5 0.00& 0.00& 8.10& 0.00& 0.00& 56.29& 317.1 " 1054 " 333.5 " 488.4 " 4.09& 0.00& 5
6 0.00& 0.00& 6.21& 0.00& 0.00& 55.00& 310.8 " 1785 " 292.5 " 305.1 " 3.81& 0.00& 6
7 0.00& 0.00& 4.54& 0.00& 0.00& 58.18& 346.3 " 2261 " 259.8 " 218.6 " 2.46& 0.00& 7
8 0.00& 0.00& 3.25& 0.00& 0.00& 77.88& 328.2 " 1479 " 232.2 " 169.2 " 1.99& 0.00& 8
9 0.00& 0.00& 1.55& 0.00& 0.00& 75.06& 337.8 " 1013 " 243.1 " 135.4 " 1.63& 0.00& 9
10 0.00& 0.00& 1.04& 0.00& 0.00& 74.68& 295.1 " 817.3 " 259.2 " 113.8 " 1.19& 0.00& 10
11 0.00& 0.00& 0.24& 0.00& 0.00& 79.05& 239.5 " 737.1 " 334.0 " 95.36" 0.81& 0.00& 11
12 0.00& 0.00& 0.04& 0.00& 0.00& 74.47& 215.0 " 659.7 " 380.6 " 79.18& 0.42& 0.00& 12
13 0.00& 0.00& 0.00& 0.00& 0.00& 61.71& 225.3 " 608.8 " 386.0 " 69.56& 0.23& 0.00& 13
14 0.00& 0.00& 0.00& 0.00& 0.00& 53.03& 245.7 " 569.8 " 398.3 " 59.48& 0.09& 0.00& 14
15 0.00& 0.00& 0.00& 0.00& 0.00& 53.49& 826.3 " 540.6 " 328.9 " 51.49& 0.01& 0.00& 15
16 0.00& 0.00& 0.00& 0.00& 0.00& 50.90& 6703 " 540.0 " 425.7 " 46.22& 0.00& 0.00& 16
17 0.00& 0.00& 0.00& 0.00& 50.82& 45.40&10207 " 770.3 " 332.7 " 40.80& 0.00& 0.00& 17
18 0.00& 0.00& 0.00& 0.00& 161.1 & 43.32& 7650 " 817.9 " 288.6 " 36.10& 0.00& 0.00& 18
19 0.00& 0.00& 0.00& 0.00& 185.7 " 42.52& 6313 " 701.6 " 272.9 " 32.47& 0.00& 0.00& 19
20 0.00& 0.00& 0.00& 0.00& 123.5 " 40.96& 8471 " 734.4 " 251.9 " 28.59& 0.00& 0.00& 20
21 0.00& 0.00& 0.00& 0.00& 99.65" 43.38&13867 " 788.8 " 259.6 " 24.64& 0.00& 0.00& 21
22 0.00& 11.33& 0.00& 0.00& 127.7 " 60.75&17251 " 750.5 " 243.7 " 21.27& 0.00& 0.00& 22
23 0.00& 65.99& 0.00& 0.00& 299.1 " 97.88&10885 " 681.6 " 240.8 " 18.44& 0.00& 0.00& 23
24 0.00& 61.31& 0.00& 0.00& 192.8 " 165.3 " 6023 " 669.6 " 241.0 " 15.58& 0.00& 0.00& 24
25 0.00& 43.95& 0.00& 0.00& 121.9 " 233.1 " 5354 " 641.2 " 277.4 " 13.13& 0.00& 0.00& 25
26 0.00& 32.08& 0.00& 0.00& 92.76& 716.2 " 8252 " 558.0 " 499.2 " 11.67& 0.00& 0.00& 26
27 0.00& 22.12& 0.00& 0.00& 73.58& 821.8 " 5152 " 545.8 " 466.9 " 10.92& 0.00& 0.00& 27
28 0.00& 16.03& 0.00& 0.00& 61.74& 640.4 " 3123 " 557.5 " 317.8 " 9.42& 0.00& 0.00& 28
29 0.00& 0.00& 0.00& 57.73& 765.3 " 2551 " 535.5 " 240.5 " 8.02& 0.00& 0.00& 29
30 0.00& 0.00& 0.00& 55.88& 971.7 " 2035 " 499.6 " 190.2 " 7.05& 0.00& 0.00& 30
31 0.00& 0.00& 70.49& 1680 " 544.6 " 5.81& 0.00& 31
Mean 0.000& 9.029& 2.693& 0.000& 57.25 & 190.6 &3930 " 859.1 " 331.9 " 108.1 & 1.226& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 66.50 &1680 " 734.4 " 305.1 " 46.22 & 0.005& 0.000&
Maximum 0.00& 65.99& 17.49& 0.00& 299.1 & 971.7 &17251 " 2261 " 621.7 " 608.1 & 6.34& 0.00&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 40.96 & 215.0 " 499.6 " 190.2 " 5.808& 0.000& 0.000&
Total 0.0& 252.8& 83.5& 0.0& 1774 & 5718 &121851 " 26633 " 9959 " 3354 & 36.8& 0.0&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 464.8 & " ... Relative Uncertainty +/-10%
Ann. Median 5.268& & ... Relative Uncertainty +/-30%
Annual Total 169664 &
Maximum Minimum
Daily 17251 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1979
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 80.34 & 638.5 " 187.8 " 362.7 ! 57.39 ! 0.016! 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 69.19 & 533.4 " 168.2 " 307.1 ! 44.23 ! 0.006! 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 60.74 & 506.5 " 152.1 " 264.0 ! 34.59 ! 0.000! 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 56.30 & 461.9 " 137.3 " 231.4 ! 28.24 ! 0.000! 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 63.50 & 419.1 " 121.7 " 196.3 ! 21.16 ! 0.000! 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 71.94 & 413.6 " 105.0 " 171.7 ! 18.30 ! 0.000! 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 67.07 & 510.9 " 90.09 & 157.6 ! 15.01 ! 0.000! 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 58.56 & 650.3 " 76.56 & 147.6 ! 11.74 ! 0.000! 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 62.83 & 699.5 " 63.20 & 137.5 ! 8.987! 0.000! 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 103.7 & 820.8 " 52.30 & 127.1 ! 7.780! 0.000! 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 245.0 " 816.8 " 45.17 & 134.3 ! 8.272! 0.000! 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 671.5 " 683.0 " 39.23 & 141.3 ! 7.707! 0.000! 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 506.6 " 614.8 " 32.66 & 127.9 ! 6.219! 0.000! 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 412.1 " 573.4 " 25.29 & 105.9 ! 5.528! 0.000& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 306.2 " 556.3 " 18.75 & 102.1 ! 4.587! 0.000& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 235.1 " 607.5 " 14.19 & 102.3 ! 3.684! 0.000& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 239.7 " 668.7 " 106.3 ! 97.89 ! 2.540! 0.000& 0.000& 17
18 0.104& 0.000& 0.000& 0.000& 0.000& 280.0 " 682.4 " 498.7 ! 86.91 ! 2.402! 0.000& 0.000& 18
19 47.09 & 0.000& 0.000& 0.000& 0.000& 402.4 " 657.5 "2166 ! 74.98 ! 2.056! 0.002& 0.000& 19
20 34.91 & 0.000& 0.000& 0.000& 0.000& 299.6 " 579.5 "4343 ! 62.95 ! 2.741! 0.004& 0.000& 20
21 22.84 & 0.000& 0.000& 0.000& 0.000& 317.8 " 504.4 "4543 ! 71.55 ! 2.566! 0.032& 0.000& 21
22 13.81 & 0.000& 0.000& 0.000& 3.154& 310.0 " 421.6 "3051 ! 105.2 ! 1.847! 0.000& 0.000& 22
23 8.577& 0.000& 0.000& 0.000& 24.98 & 417.3 " 403.8 "1834 ! 158.4 ! 1.542! 0.000& 0.000& 23
24 4.433& 0.000& 0.000& 0.000& 61.18 &1343 " 392.3 "1254 ! 233.4 ! 1.429! 0.000& 0.000& 24
25 3.238& 0.000& 0.000& 0.000& 192.6 "1471 " 363.8 "1093 ! 226.8 ! 1.423! 0.000& 0.000& 25
26 1.570& 0.000& 0.000& 0.000& 334.8 "1515 " 324.1 "1051 ! 172.7 ! 0.813! 0.000& 0.000& 26
27 0.708& 0.000& 0.000& 0.000& 261.7 "1128 " 284.8 " 909.8 ! 170.3 ! 0.370! 0.000& 0.000& 27
28 0.311& 0.000& 0.000& 0.000& 219.0 " 947.6 " 262.1 " 780.3 ! 147.3 ! 0.165! 0.000& 0.000& 28
29 0.005& 0.000& 0.000& 164.5 " 848.7 " 245.3 " 635.0 ! 108.4 ! 0.084! 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 127.1 " 777.0 " 228.6 " 536.5 ! 79.20 ! 0.153! 0.000& 0.000& 30
31 0.000& 0.000& 99.09 " 207.9 " 435.5 ! 0.087! 0.000& 31
Mean 4.439& 0.000& 0.000& 0.000& 48.01 & 445.7 & 507.5 " 792.5 ! 153.8 ! 9.796! 0.002! 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 302.9 & 510.9 " 168.2 ! 139.4 ! 3.684! 0.000! 0.000&
Maximum 47.09 & 0.000& 0.000& 0.000& 334.8 &1515 & 820.8 "4543 ! 362.7 ! 57.39 ! 0.032! 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 56.30 & 207.9 " 14.19 ! 62.95 ! 0.084! 0.000! 0.000&
Total 137.6 & 0.00& 0.00& 0.00& 1488 &13371 &15734 "24570 ! 4614 ! 303.6 ! 0.06! 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 164.9 ! ! ... Not reviewed / Quality not known
Ann. Median 0.000! " ... Relative Uncertainty +/-10%
Annual Total 60220 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 4543 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1980
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 21.14 & 277.5 " 293.8 " 127.5 " 14.75 & 19.56 & 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 22.45 & 237.2 " 264.1 " 106.5 " 14.83 & 18.13 & 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 19.05 & 358.3 " 223.7 " 88.48 & 13.24 & 14.84 & 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 34.06 & 277.0 " 227.0 " 84.44 & 11.81 & 12.88 & 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 35.06 & 204.5 " 222.6 " 76.35 & 10.24 & 12.12 & 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 21.18 & 37.09 & 161.6 " 210.0 " 67.36 & 10.13 & 20.54 & 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 33.99 & 33.32 & 135.1 " 193.2 " 64.86 & 9.091& 59.81 & 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 19.21 & 28.20 & 114.4 " 162.7 " 60.52 & 7.133& 43.13 & 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 24.10 & 24.67 & 105.4 " 164.0 " 58.22 & 5.052& 26.58 & 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 33.80 & 20.07 & 110.9 " 206.1 " 51.67 & 4.395& 18.56 & 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 28.90 & 16.63 & 192.6 " 198.4 " 43.10 & 4.478& 12.09 & 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 13.66 & 13.85 & 318.1 " 181.0 " 38.62 & 5.167& 9.971& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 8.230& 13.27 & 356.3 " 187.9 " 36.19 & 5.255& 8.470& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 7.412& 14.60 & 407.6 " 180.6 " 29.77 & 4.247& 6.468& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 5.828& 15.63 & 437.1 " 137.2 " 33.71 & 8.169& 4.472& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 3.691& 17.15 & 441.1 " 110.3 " 27.08 & 235.0 & 2.677& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 3.263& 22.45 & 389.5 " 100.5 " 25.75 & 150.0 " 2.159& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 2.757& 19.52 & 330.6 " 98.64 " 24.05 & 215.5 & 1.297& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 1.725& 20.04 & 459.7 " 106.5 " 22.61 & 391.0 " 1.099& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 1.104& 23.68 & 324.7 " 96.02 " 18.71 & 207.3 " 0.429& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.874& 73.82 & 237.3 " 96.55 " 34.11 & 181.7 " 0.086& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 4.934& 198.4 " 189.9 " 99.49 " 68.52 & 169.3 " 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 8.340& 354.9 " 159.6 " 102.1 " 40.54 & 170.4 " 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 17.49 & 433.0 " 141.3 " 105.4 " 35.95 & 132.3 " 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 40.47 & 516.4 " 132.5 " 152.0 " 29.84 & 104.5 " 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 25.08 & 347.3 " 171.6 " 155.0 " 25.39 & 85.54 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 18.39 & 354.6 " 276.5 " 167.1 " 22.62 & 70.52 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 24.08 & 291.3 " 391.3 " 147.4 " 18.17 & 56.37 & 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 16.26 & 224.3 " 557.1 " 137.3 " 15.64 & 42.98 & 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 15.33 & 286.8 " 475.2 " 192.5 " 14.93 & 34.10 & 0.000& 0.000& 30
31 0.000& 0.000& 16.79 & 339.0 " 168.3 " 26.29 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 12.80 & 117.7 & 281.0 " 164.1 " 46.38 & 77.46 & 9.847& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 8.340& 26.44 & 277.0 " 164.0 " 36.07 & 26.29 & 3.575& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 40.47 & 516.4 & 557.1 " 293.8 " 127.5 & 391.0 & 59.81 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 13.27 & 105.4 " 96.02 " 14.93 & 4.247& 0.000& 0.000&
Total 0.000& 0.000& 0.000& 0.000& 396.9 &3533 &8711 "5088 "1391 &2401 & 295.3 & 0.000&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 59.61 & " ... Relative Uncertainty +/-10%
Ann. Median 4.993& & ... Relative Uncertainty +/-30%
Annual Total 21819 &
Maximum Minimum
Daily 557.1 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1981
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.00& 0.00& 0.00& 0.00& 0.00& 5916 " 1031 " 5303 " 706.0 " 124.3 " 17.56& 9.36& 1
2 0.00& 0.00& 0.16& 0.00& 0.00& 2727 " 922.6 " 3300 " 665.0 " 156.7 " 15.39& 9.19& 2
3 0.00& 0.00& 4.36& 0.00& 0.00& 1994 " 728.9 " 3016 " 610.0 " 165.6 " 13.50& 8.89& 3
4 0.00& 0.00& 5.98& 0.00& 0.00& 1178 " 620.1 " 2768 " 572.3 " 157.4 " 13.04& 8.24& 4
5 0.00& 0.00& 5.10& 0.00& 0.00& 855.0 " 563.6 " 2636 " 577.4 " 137.3 " 12.70& 6.93& 5
6 0.00& 0.00& 3.37& 0.00& 0.00& 1699 " 524.1 " 2045 " 546.4 " 117.1 " 21.19& 5.28& 6
7 0.00& 0.00& 0.71& 0.00& 0.00& 7593 " 506.5 " 2296 " 509.9 " 97.88" 15.41& 4.45& 7
8 0.00& 0.00& 0.47& 0.00& 0.00&13693 " 601.9 " 2656 " 548.7 " 82.91& 16.32& 5.22& 8
9 0.00& 0.00& 0.17& 0.00& 0.00&11165 " 572.0 " 2945 " 600.2 " 76.07& 16.78& 4.45& 9
10 0.00& 0.00& 0.03& 0.00& 0.00& 7759 " 575.6 " 5575 ! 684.9 " 71.39& 13.90& 4.17& 10
11 0.00& 0.00& 0.00& 0.00& 0.00& 4437 " 521.9 " 8188 ! 751.3 " 65.76& 12.80& 1.78& 11
12 0.00& 0.00& 0.00& 0.00& 0.00& 3936 " 480.8 " 7820 " 569.5 " 53.72& 473.3 & 0.59& 12
13 0.00& 0.00& 0.00& 0.00& 0.00& 2777 " 435.7 " 5111 " 461.8 " 50.90& 1402 " 0.22& 13
14 0.00& 0.00& 0.00& 0.00& 0.00& 1944 " 409.9 " 3454 " 410.5 " 48.55& 491.3 " 0.08& 14
15 0.00& 0.00& 0.00& 0.00& 0.00& 1456 " 399.8 " 4002 " 376.3 " 43.69& 229.0 " 0.01& 15
16 0.00& 0.00& 0.00& 0.00& 0.00& 1329 " 383.6 " 5111 " 334.6 " 41.80& 125.0 " 0.00& 16
17 0.00& 0.00& 0.00& 0.00& 0.00& 1161 " 533.3 " 4327 " 307.8 " 35.59& 86.25& 0.00& 17
18 0.00& 0.00& 0.00& 0.00& 0.00& 992.2 " 1029 " 2839 " 301.7 " 35.43& 60.00& 0.00& 18
19 0.00& 0.00& 0.00& 0.00& 0.00& 856.4 " 1557 " 2681 " 287.5 " 29.06& 44.13& 0.00& 19
20 0.00& 0.00& 0.00& 0.00& 0.00& 750.4 " 1135 " 2558 " 280.3 " 29.23& 33.53& 0.00& 20
21 0.00& 0.00& 0.00& 0.00& 0.00& 719.9 " 822.6 " 2623 " 287.9 " 28.60& 25.70& 0.00& 21
22 0.00& 0.00& 0.00& 0.00& 0.00& 671.5 " 2671 " 2171 " 271.3 " 27.05& 23.65& 0.00& 22
23 0.00& 0.00& 0.00& 0.00& 0.00& 698.8 " 6964 " 1782 " 263.1 " 28.35& 20.71& 0.00& 23
24 0.00& 0.00& 0.00& 0.00& 0.00& 874.0 " 8112 " 1589 " 255.5 " 26.73& 17.00& 0.00& 24
25 0.00& 0.00& 0.00& 0.00& 0.00& 1043 " 4048 " 1442 " 230.3 " 22.71& 16.07& 0.00& 25
26 0.00& 0.00& 0.00& 0.00& 50.00& 896.1 " 2860 " 1278 " 202.1 " 22.16& 18.24& 0.00& 26
27 0.00& 0.00& 0.00& 0.00& 270.6 " 1339 " 4027 " 1116 " 170.6 " 21.79& 14.00& 0.00& 27
28 0.00& 0.00& 0.00& 0.00& 643.3 " 1852 " 3933 " 1011 " 148.0 " 24.12& 13.35& 0.00& 28
29 0.00& 0.00& 0.00& 573.5 " 1477 " 3038 " 941.4 " 128.3 " 21.90& 11.48& 0.00& 29
30 0.00& 0.00& 0.00& 3439 " 1231 " 4257 " 836.4 " 121.0 " 22.54& 10.05& 0.00& 30
31 0.00& 0.00& 7082 " 5087 " 748.3 " 19.76& 0.00& 31
Mean 0.000& 0.000& 0.656& 0.000& 389.0 &2834 "1914 "3038 ! 406.0 " 60.85 & 109.4 & 2.222&
Median 0.000& 0.000& 0.000& 0.000& 0.000&1398 " 822.6 "2656 ! 355.4 " 41.80 & 17.28 & 0.000&
Maximum 0.00& 0.00& 5.98& 0.00& 7082 &13693 " 8112 " 8188 ! 751.3 " 165.6 & 1402 & 9.36&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 671.5 " 383.6 " 748.3 ! 121.0 " 19.75 & 10.04 & 0.000&
Total 0.00& 0.00& 20.34& 0.00&12059 &85033 "59361 "94184 !12181 " 1886 & 3283 & 68.87&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 734.4 ! ! ... Not reviewed / Quality not known
Ann. Median 13.50 ! " ... Relative Uncertainty +/-10%
Annual Total 268079 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 13693 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1982
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 102.0 " 0.000& 0.000& 0.000& 19.29 & 109.6 " 210.3 " 316.0 " 156.6 " 11.09 & 132.0 " 1
2 0.000& 82.57 & 0.000& 0.000& 0.000& 16.60 & 99.92 " 368.5 " 269.4 " 138.5 " 10.54 & 86.19 & 2
3 0.000& 64.98 & 0.000& 0.000& 0.000& 14.12 & 89.47 & 411.5 " 232.3 " 138.3 " 10.33 & 54.84 & 3
4 0.000& 51.26 & 0.000& 0.000& 0.000& 13.23 & 83.39 & 355.8 " 194.7 " 138.3 " 9.123& 36.70 & 4
5 0.000& 40.06 & 0.000& 0.000& 0.000& 15.61 & 84.24 & 375.3 " 168.1 " 143.1 " 8.012& 26.95 & 5
6 0.000& 31.25 & 0.000& 0.000& 0.000& 14.15 & 98.28 & 298.2 " 142.1 " 157.6 " 6.562& 15.68 & 6
7 0.000& 23.60 & 0.000& 0.000& 0.000& 14.57 & 151.8 " 365.5 " 121.9 " 189.3 " 5.969& 12.22 & 7
8 0.000& 16.88 & 0.000& 0.000& 0.000& 56.71 & 174.6 " 774.1 " 108.6 " 301.0 " 4.359& 11.13 & 8
9 0.000& 13.63 & 0.000& 0.000& 0.000& 120.9 & 176.7 "1158 " 93.18 " 217.3 " 3.431& 10.41 & 9
10 0.000& 12.40 & 0.000& 0.000& 0.000& 219.1 " 157.9 "1001 " 80.78 & 145.2 " 2.132& 7.913& 10
11 0.000& 10.24 & 0.000& 0.000& 0.000& 165.7 " 134.3 " 712.9 " 71.97 & 105.1 " 1.805& 5.918& 11
12 0.000& 8.583& 0.000& 0.000& 0.000& 170.5 " 115.3 " 549.0 " 66.95 & 81.98 & 2.011& 2.820& 12
13 0.000& 5.101& 0.000& 0.000& 0.000& 161.2 " 97.94 " 469.3 " 57.92 & 75.60 & 1.131& 2.208& 13
14 0.000& 2.912& 0.000& 0.000& 0.000& 240.8 " 88.38 & 402.6 " 57.73 & 63.72 & 0.583& 0.880& 14
15 0.000& 1.193& 0.000& 0.000& 0.000& 285.0 " 91.23 & 335.1 " 109.2 & 53.49 & 227.4 & 0.094& 15
16 0.000& 1.614& 0.000& 0.000& 0.000& 300.5 " 189.7 " 281.5 " 315.0 " 46.91 & 156.0 " 0.008& 16
17 0.000& 1.021& 0.000& 0.000& 0.000& 413.5 " 296.6 " 241.8 " 399.2 " 39.93 & 82.20 & 0.000& 17
18 0.000& 0.756& 0.000& 0.000& 0.000& 425.0 " 229.5 " 220.9 " 641.1 " 33.30 & 50.00 & 0.000& 18
19 0.000& 0.412& 0.000& 0.000& 0.000& 446.7 " 192.8 " 326.7 " 504.5 " 30.04 & 32.25 & 0.000& 19
20 0.000! 0.041& 0.000& 0.000& 0.000& 368.9 " 243.1 " 423.7 " 340.2 " 25.72 & 20.11 & 0.000& 20
21 0.032! 0.004& 0.000& 0.000& 0.000& 301.7 " 454.8 " 512.9 " 277.7 " 22.36 & 15.01 & 0.000& 21
22 475.7 ! 0.000& 0.000& 0.000& 0.000& 236.8 " 804.0 " 447.0 " 280.6 " 19.56 & 11.32 & 0.000& 22
23 3567 ! 0.000& 0.000& 0.000& 0.000& 182.1 " 908.8 " 457.7 " 271.7 " 16.29 & 9.984& 0.000& 23
24 1987 ! 0.000& 0.000& 0.000& 0.000& 151.4 " 768.0 " 860.7 " 330.4 " 14.72 & 8.615& 0.000& 24
25 1045 ! 0.000& 0.000& 0.000& 0.000& 138.9 " 631.8 "1038 " 372.6 " 16.88 & 7.912& 0.000& 25
26 642.2 " 0.000& 0.000& 0.000& 0.000& 152.7 " 486.8 "1129 " 366.2 " 15.44 & 25.03 & 0.000& 26
27 471.1 " 0.000& 0.000& 0.000& 18.79 & 148.1 " 387.4 " 818.7 " 343.9 " 14.92 & 17.77 & 0.000& 27
28 356.6 " 0.000& 0.000& 0.000& 69.95 & 134.1 " 349.0 " 701.9 " 305.5 " 12.92 & 133.9 & 0.000& 28
29 250.2 " 0.000& 0.000& 44.73 & 132.6 " 292.2 " 624.2 " 236.6 " 12.61 & 165.0 " 0.000& 29
30 171.4 " 0.000& 0.000& 33.96 & 124.1 " 262.1 " 487.5 " 184.9 " 11.95 & 203.5 " 0.000& 30
31 126.1 " 0.000& 24.91 & 228.9 " 387.5 " 11.45 & 0.000& 31
Mean 293.3 ! 16.80 & 0.000& 0.000& 6.205& 172.8 & 273.5 & 540.3 " 242.0 & 79.05 & 41.44 & 13.09 &
Median 0.000! 2.263& 0.000& 0.000& 0.000& 152.1 & 189.7 & 447.0 " 253.0 & 46.91 & 10.44 & 0.008&
Maximum 3567 ! 102.0 & 0.000& 0.000& 69.95 & 446.7 & 908.8 &1158 " 641.1 & 301.0 & 227.4 & 132.0 &
Minimum 0.000! 0.000& 0.000& 0.000& 0.000& 13.23 & 83.39 & 210.3 " 57.73 & 11.45 & 0.583& 0.000&
Total 9095 ! 470.6 & 0.00& 0.00& 192.3 & 5185 & 8479 &16750 " 7262 & 2450 & 1243 & 406.0 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 141.1 ! ! ... Not reviewed / Quality not known
Ann. Median 15.44 ! " ... Relative Uncertainty +/-10%
Annual Total 51536 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 3567 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1983
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.00& 0.00& 0.00& 3.56& 0.00& 5.33!11741 " 8526 " 3468 " 475.6 " 22.95& 34.32& 1
2 0.00& 0.00& 0.00& 11.43& 0.00& 127.8 ! 7636 " 7571 " 4080 " 441.2 " 20.56& 34.91& 2
3 0.00& 0.00& 0.00& 4.56& 0.00& 405.4 ! 5155 " 6412 " 4582 " 409.4 " 20.20& 40.30& 3
4 0.00& 0.00& 0.00& 2.36& 0.00& 793.9 ! 3684 " 5120 " 5272 " 372.6 " 14.91& 36.87& 4
5 0.00& 0.00& 0.00& 1.43& 0.00& 1299 ! 3524 " 4326 "10023 " 344.8 " 14.59& 31.97& 5
6 0.00& 0.00& 0.00& 0.67& 0.00& 596.2 ! 3104 " 4451 " 8075 " 323.6 " 46.58& 30.92& 6
7 0.00& 0.00& 0.00& 0.28& 0.00& 280.1 ! 2588 " 5195 " 8142 " 303.6 " 81.83& 30.85& 7
8 0.00& 0.00& 0.00& 0.07& 0.00& 145.1 ! 7538 " 3627 " 7975 " 284.2 " 85.92& 26.38& 8
9 0.00& 0.00& 0.00& 0.00& 0.00& 104.3 "13963 " 2973 " 5988 " 245.6 " 69.54& 21.86& 9
10 0.00& 0.00& 0.00& 0.00& 0.00& 80.02&12572 " 2561 " 4459 " 197.8 " 48.73& 17.60& 10
11 0.00& 0.00& 0.00& 0.00& 0.00& 74.62& 9449 " 2309 " 3566 " 173.8 " 34.21& 12.13& 11
12 0.00& 0.00& 0.00& 0.00& 0.00& 77.09& 7636 " 2369 " 3105 " 160.4 " 126.5 & 10.58& 12
13 0.00& 0.00& 0.00& 0.00& 0.00& 67.38& 5272 " 3193 " 3591 " 151.7 " 237.7 " 7.00& 13
14 0.00& 0.00& 0.00& 0.00& 0.00& 61.55& 5160 " 4503 " 4026 " 141.0 " 281.7 " 3.70& 14
15 0.00& 0.00& 0.00& 0.00& 0.00& 54.63& 4710 " 2948 " 3217 " 127.6 " 193.7 " 3.90& 15
16 0.00& 0.00& 0.00& 0.00& 0.00& 45.51& 3825 " 2582 " 2701 " 116.7 " 215.9 " 3.33& 16
17 0.00& 0.00& 0.00& 0.00& 0.00& 129.1 & 3040 " 2123 " 3060 " 108.9 " 403.1 " 1.78& 17
18 0.00& 0.00& 7.88& 0.00& 0.00& 1136 " 2490 " 1908 " 2492 " 100.0 " 641.3 " 0.96& 18
19 0.00& 0.00& 13.45& 0.00& 0.00& 1320 " 2113 " 1696 " 1988 " 91.38" 624.8 " 0.51& 19
20 0.00& 0.00& 7.66& 0.00& 0.00& 1935 " 1836 " 1661 " 1677 " 79.81& 424.8 " 0.12& 20
21 0.00& 0.00& 3.41& 0.00& 0.00& 1138 " 1680 " 1542 " 1403 " 65.47& 291.8 " 0.03& 21
22 0.00& 0.00& 0.98& 0.00& 0.00& 881.4 " 1513 " 1358 " 1218 " 59.32& 204.1 " 0.00& 22
23 0.00& 0.00& 0.20& 0.00& 0.00& 797.6 " 1350 " 1413 " 1042 " 51.83& 143.4 " 0.00& 23
24 0.00& 0.00& 0.01& 0.00& 0.00& 635.7 " 2678 " 2321 " 877.0 " 46.46& 110.2 " 0.00& 24
25 0.00& 0.00& 0.00& 0.00& 0.00& 599.4 "10112 " 5191 " 815.7 " 43.51& 94.89" 0.00& 25
26 0.00& 0.00& 0.00& 0.00& 0.00& 621.0 "26402 " 6931 " 833.5 " 37.90& 81.71& 0.00& 26
27 0.00& 0.00& 0.00& 0.00& 0.00& 592.1 "21448 " 5020 " 759.8 " 36.31& 66.74& 0.00& 27
28 0.00& 0.00& 0.00& 0.00& 0.00& 4201 "13345 " 2957 " 652.9 " 35.11& 52.62& 0.00& 28
29 0.00& 0.00& 0.00& 0.00&13745 " 9553 " 2833 " 567.2 " 32.86& 42.12& 0.00& 29
30 0.00& 0.00& 0.00& 0.00&20585 " 8089 " 3173 " 515.2 " 31.04& 36.11& 49.30& 30
31 0.00& 0.00& 0.00! 9294 " 3153 " 28.44& 66.16& 31
Mean 0.000& 0.000& 1.083& 0.812& 0.000!1751 !7177 "3611 "3339 " 165.1 & 157.7 & 15.01 &
Median 0.000& 0.000& 0.000& 0.000& 0.000! 594.2 !5160 "2973 "3083 " 116.7 & 83.87 & 3.899&
Maximum 0.00& 0.00& 13.45& 11.43& 0.00!20585 !26402 " 8526 "10023 " 475.6 & 641.3 & 66.16&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000! 5.334!1350 "1358 " 515.2 " 28.44 & 14.59 & 0.000&
Total 0.0& 0.0& 33.6& 24.4& 0.0! 52537 !222515 "111962 "100181 " 5118 & 4733 & 465.5&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 1363 ! ! ... Not reviewed / Quality not known
Ann. Median 31.03 ! " ... Relative Uncertainty +/-10%
Annual Total 497573 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 26402 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1984
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 46.09 & 0.000& 0.000& 0.000& 84.73 & 980.0 " 337.9 " 406.5 " 333.9 " 177.1 " 19.13 & 0.801& 1
2 14.84 & 0.000& 0.000& 0.000& 73.56 & 742.2 " 309.6 " 486.7 " 332.5 " 183.6 " 17.67 & 0.248& 2
3 96.87 & 0.000& 0.000& 0.000& 74.78 & 605.8 " 353.8 " 607.2 " 337.0 " 182.3 " 16.62 & 0.025& 3
4 190.4 " 0.000& 0.000& 0.000& 83.68 & 516.6 " 632.4 "1360 " 314.2 " 186.8 " 15.21 & 0.004& 4
5 102.3 & 0.000& 0.000& 0.000& 83.06 & 446.2 "1172 "1054 " 344.7 " 189.6 " 17.88 & 0.000& 5
6 61.68 & 0.000& 0.000& 0.000& 93.86 & 474.7 "1743 "1059 " 384.7 " 163.8 " 18.50 & 0.000& 6
7 43.92 & 0.000& 0.000& 0.000& 171.3 " 565.9 "1701 "1280 " 364.7 " 157.0 " 20.44 & 0.000& 7
8 33.26 & 0.000& 0.000& 0.000& 254.3 " 720.5 "1384 "1023 " 403.4 " 146.7 " 30.45 & 0.000& 8
9 28.12 & 0.000& 0.000& 0.000& 293.5 " 604.9 "1059 " 984.8 " 419.0 " 136.2 " 41.23 & 0.000& 9
10 23.55 & 0.000& 0.000& 0.000& 391.1 " 462.6 " 903.1 " 915.3 " 401.1 " 132.3 " 40.62 & 0.000& 10
11 16.53 & 0.000& 0.000& 0.000& 390.0 " 379.8 " 733.5 " 798.1 " 550.6 " 144.7 " 40.87 & 0.000& 11
12 15.03 & 0.000& 0.000& 0.000& 362.5 " 333.9 " 605.0 " 703.8 " 562.8 " 133.6 " 87.04 & 0.000& 12
13 15.47 & 0.000& 0.000& 0.000& 297.2 " 326.8 " 536.5 " 674.9 " 415.9 " 118.7 " 103.2 " 0.000& 13
14 10.25 & 0.000& 0.000& 0.000& 234.0 " 360.1 " 482.2 " 672.9 " 584.5 " 102.7 " 75.10 & 0.000& 14
15 5.964& 0.000& 0.000& 0.000& 190.8 " 756.5 " 441.0 " 674.3 "2018 " 89.44 & 51.89 & 0.000& 15
16 5.214& 0.000& 0.000& 0.000& 164.7 " 835.5 " 469.5 " 779.8 "6687 " 79.42 & 43.00 & 0.000& 16
17 6.328& 0.000& 0.000& 0.000& 161.3 " 559.4 " 515.5 " 904.4 "2930 " 73.24 & 34.59 & 0.000& 17
18 5.093& 0.000& 0.000& 0.000& 221.0 " 438.8 " 599.9 " 886.1 "1895 " 65.64 & 27.59 & 0.000& 18
19 2.383& 0.000& 0.000& 0.000& 348.0 " 367.9 " 629.4 " 735.1 "1398 " 57.73 & 21.03 & 0.000& 19
20 0.727& 0.000& 0.000& 0.000& 909.8 " 322.0 " 580.7 " 688.4 " 947.2 " 52.00 & 14.45 & 0.000& 20
21 0.134& 0.000& 0.000& 0.000&1222 " 322.0 " 559.0 " 699.4 " 729.0 " 48.34 & 10.81 & 0.000& 21
22 0.003& 0.000& 0.000& 0.000&1451 " 391.0 " 553.1 " 670.9 " 614.3 " 42.45 & 8.160& 0.000& 22
23 0.000& 0.000& 0.000& 0.000&1084 "1029 " 531.1 " 676.8 " 523.9 " 39.28 & 8.667& 0.000& 23
24 0.000& 0.000& 0.000& 18.28 & 826.4 "1170 " 484.4 " 719.1 " 435.4 " 36.36 & 6.175& 0.000& 24
25 0.000& 0.000& 0.000& 57.72 & 669.3 " 741.0 " 443.4 " 612.1 " 365.7 " 33.37 & 4.418& 0.000& 25
26 0.000& 0.000& 0.000& 98.85 & 873.4 " 575.9 " 431.2 " 518.3 " 307.8 " 29.67 & 2.961& 0.000& 26
27 0.000& 0.000& 0.000& 69.61 &1652 " 518.1 " 468.7 " 444.8 " 266.0 " 28.50 & 2.167& 0.000& 27
28 0.000& 0.000& 0.000& 51.50 &2455 " 501.0 " 501.6 " 381.5 " 244.8 " 24.79 & 2.771& 0.000& 28
29 0.000& 0.000& 0.000& 63.14 &2626 " 433.5 " 552.2 " 354.9 " 215.5 " 20.94 & 2.152& 0.000& 29
30 0.000& 0.000& 90.84 &2118 " 374.4 " 509.9 " 346.9 " 187.3 " 17.36 & 1.368& 0.000& 30
31 0.000& 0.000& 1407 " 445.8 " 341.4 " 17.85 & 0.000& 31
Mean 23.36 & 0.000& 0.000& 14.99 & 686.2 & 561.9 " 666.8 " 724.6 " 850.6 " 93.94 & 26.21 & 0.035&
Median 5.964& 0.000& 0.000& 0.000& 348.0 & 508.8 " 536.5 " 688.4 " 409.7 " 79.42 & 18.19 & 0.000&
Maximum 190.4 & 0.000& 0.000& 98.85 &2626 &1170 "1743 "1360 "6687 " 189.6 & 103.2 & 0.801&
Minimum 0.000& 0.000& 0.000& 0.000& 73.56 & 322.0 " 309.6 " 341.4 " 187.3 " 17.36 & 1.368& 0.000&
Total 724.3 & 0.00& 0.00& 449.9 &21273 &16858 "20672 "22465 "25518 " 2912 & 786.3 & 1.08&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 305.0 & " ... Relative Uncertainty +/-10%
Ann. Median 57.73 & & ... Relative Uncertainty +/-30%
Annual Total 111661 &
Maximum Minimum
Daily 6687 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1985
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 79.77 & 555.2 " 511.4 " 100.4 " 6.365& 2.948& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 174.4 " 528.8 " 447.3 " 85.67 & 6.169& 2.764& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 409.0 " 520.8 " 427.3 " 78.41 & 9.213& 1.837& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 578.4 " 686.8 " 347.2 " 73.39 & 7.173& 0.590& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 403.0 " 980.1 " 286.4 " 66.37 & 7.091& 0.130& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 301.7 "1038 " 244.0 " 57.69 & 6.287& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 223.1 " 767.0 " 211.1 " 50.25 & 6.469& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 11.40 & 168.9 " 612.8 " 183.5 " 47.49 & 4.754& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 25.29 & 134.3 " 519.4 " 168.4 " 39.22 & 3.381& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 29.18 & 113.4 " 512.0 " 156.5 " 39.30 & 3.117& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 34.50 & 96.28 " 572.5 " 148.6 " 35.49 & 2.797& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 36.45 & 86.41 & 644.9 " 143.5 " 34.10 & 1.231& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 40.78 & 108.3 & 502.2 " 144.7 " 33.53 & 0.272& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 41.84 & 201.0 " 406.0 " 135.3 " 28.92 & 0.048& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 38.14 & 312.5 " 344.7 " 125.7 " 28.72 & 0.005& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 34.68 & 590.6 " 300.9 " 114.5 " 24.19 & 0.000& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 27.95 & 524.3 " 264.3 " 114.5 " 22.42 & 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 26.93 & 401.3 " 252.4 " 189.5 " 20.46 & 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 23.68 & 443.3 " 451.7 " 184.5 " 28.43 & 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 23.13 & 554.7 " 601.6 " 199.6 " 21.59 & 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 24.53 & 651.9 "1178 " 268.3 " 18.96 & 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 26.30 & 577.1 "1031 " 302.8 " 17.52 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 27.26 & 421.5 " 678.0 " 332.6 " 15.09 & 0.435& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 31.52 & 295.5 " 574.7 " 296.5 " 13.31 & 20.80 & 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 34.96 & 261.8 " 601.5 " 247.2 " 11.29 & 15.35 & 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 34.54 & 311.0 " 764.4 " 208.5 " 10.13 & 16.89 & 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 30.62 & 457.0 "1048 " 167.4 " 9.856& 15.07 & 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 29.47 & 859.9 "1344 " 139.4 " 7.590& 10.23 & 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 42.84 &1430 "1394 " 125.8 " 6.914& 6.235& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 54.80 &1194 " 856.5 " 115.7 " 9.074& 3.908& 0.000& 30
31 0.000& 0.000& 0.000& 718.6 " 606.1 " 9.055& 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 24.36 & 422.1 & 682.0 " 222.9 " 33.70 & 5.111& 0.267&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 27.60 & 401.3 & 601.6 " 187.0 " 28.43 & 3.645& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 54.80 &1430 &1394 " 511.4 " 100.4 & 20.80 & 2.948&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 79.77 & 252.4 " 114.5 " 6.914& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 730.9 &13085 &21142 " 6689 " 1044 & 153.3 & 8.27&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 117.4 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 42854 &
Maximum Minimum
Daily 1430 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1986
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 192.3 " 1.570& 0.000& 62.81 &2762 "5329 " 657.1 " 99.53 " 16.70 & 0.800& 1
2 0.000& 0.000& 133.6 " 1.139& 0.000& 53.44 &1866 "7470 " 617.5 " 92.80 " 13.14 & 0.489& 2
3 0.000& 0.000& 88.07 & 0.928& 0.000& 46.77 &1636 "4428 " 600.1 " 87.43 " 11.53 & 0.127& 3
4 0.000& 0.000& 64.23 & 0.421& 0.000& 41.12 &1616 "2563 " 572.3 " 85.33 & 9.908& 0.005& 4
5 0.000& 0.000& 47.44 & 0.224& 0.000& 38.14 &1387 "1945 " 539.2 " 83.26 & 8.402& 0.000& 5
6 0.000& 0.000& 32.27 & 0.081& 0.000& 36.73 &1057 "1436 " 492.2 " 79.46 & 8.283& 0.000& 6
7 0.000& 0.000& 23.65 & 0.033& 0.000& 32.86 & 937.3 "1188 " 433.3 " 75.89 & 8.620& 0.000& 7
8 0.000& 0.000& 18.26 & 0.003& 0.000& 30.80 & 820.1 "1423 " 407.0 " 70.30 & 9.613& 0.000& 8
9 0.000& 0.000& 15.20 & 0.000& 0.000& 37.87 & 705.5 "1774 " 404.5 " 67.57 & 9.179& 0.000& 9
10 0.000& 0.000& 15.49 & 0.000& 0.000& 40.63 & 617.1 "1698 " 407.0 " 65.95 & 13.85 & 0.000& 10
11 0.000& 0.000& 13.33 & 0.000& 0.000& 44.17 & 554.0 "1424 " 396.3 " 62.45 & 36.08 & 0.000& 11
12 0.000& 0.000& 13.48 & 0.000& 0.000& 50.53 & 509.0 "1333 " 385.0 " 75.67 & 41.62 & 0.000& 12
13 0.000& 0.000& 10.41 & 0.000& 0.000& 54.50 & 492.7 "1282 " 359.1 " 161.8 & 47.55 & 0.000& 13
14 0.000& 0.000& 9.685& 0.000& 2.352! 64.90 & 829.1 "1128 " 338.7 " 188.6 " 51.99 & 0.000& 14
15 0.000& 0.000& 16.63 & 0.000& 39.36 ! 71.08 &2425 "1206 " 437.4 " 170.7 " 39.31 & 0.000& 15
16 0.000& 0.000& 14.20 & 0.000& 100.9 ! 172.9 &3332 "1027 " 564.8 " 135.5 " 33.67 & 0.000& 16
17 0.000& 0.000& 10.34 & 0.000& 88.99 ! 415.6 "1979 " 979.7 " 555.9 " 112.4 " 31.98 & 0.000& 17
18 0.000& 0.000& 10.41 & 0.000& 40.11 ! 735.6 "1210 "1062 " 513.8 " 108.5 " 29.31 & 0.000& 18
19 0.000& 0.000& 11.45 & 0.000& 54.00 &1179 " 962.5 "1102 " 430.8 " 97.04 " 24.30 & 0.000& 19
20 0.000& 0.000& 6.199& 0.000& 56.73 & 734.3 " 859.8 "1455 " 361.1 " 86.48 & 21.42 & 0.000& 20
21 0.000& 0.000& 18.56 & 0.000& 66.26 & 446.7 " 847.6 "1546 " 330.5 " 71.82 & 15.09 & 0.000& 21
22 0.000& 361.1 ! 13.72 & 0.000& 137.1 " 309.5 " 880.2 "1955 " 303.9 " 61.89 & 12.85 & 0.000& 22
23 0.000& 893.0 ! 10.95 & 0.000& 238.7 " 249.6 " 932.3 "1774 " 275.2 " 54.63 & 12.31 & 0.000& 23
24 0.000& 944.9 " 10.12 & 0.000& 302.0 " 222.6 " 944.4 "1866 " 239.6 " 47.71 & 11.11 & 0.000& 24
25 0.000& 776.4 " 9.027& 0.000& 276.1 " 705.2 " 859.3 "1559 " 200.5 " 38.44 & 7.063& 0.000& 25
26 0.000& 445.9 " 7.770& 0.000& 192.2 "2369 " 770.0 "1368 " 181.8 " 35.28 & 3.145& 0.000& 26
27 0.000& 332.5 " 7.312& 0.000& 142.5 "5845 " 644.3 "1147 " 147.7 " 25.03 & 2.937& 0.000& 27
28 0.000& 264.7 " 6.479& 0.000& 126.4 "5797 " 575.3 " 988.5 " 127.4 " 26.82 & 3.459& 0.000& 28
29 0.000& 3.855& 0.000& 106.9 "6788 " 544.3 " 894.2 " 117.0 " 19.33 & 3.006& 0.000& 29
30 0.000& 2.496& 0.000& 90.76 "6132 " 597.9 " 827.0 " 105.3 " 19.03 & 1.590& 0.000& 30
31 0.000& 2.808& 76.74 & 1764 " 734.9 " 18.48 & 0.000& 31
Mean 0.000& 143.5 ! 27.09 & 0.147& 68.98 !1093 &1158 "1804 " 383.4 " 78.23 & 17.97 & 0.046&
Median 0.000& 0.000! 13.33 & 0.000& 40.11 ! 121.9 & 880.2 "1423 " 400.4 " 75.67 & 12.58 & 0.000&
Maximum 0.000& 944.9 ! 192.3 & 1.570& 302.0 !6788 &3332 "7470 " 657.1 " 188.6 & 51.99 & 0.800&
Minimum 0.000& 0.000! 2.496& 0.000& 0.000! 30.80 & 492.7 " 734.9 " 105.3 " 18.48 & 1.590& 0.000&
Total 0.00& 4018 ! 839.9 & 4.40& 2138 !32811 &35923 "55927 "11503 " 2425 & 539.0 & 1.42&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 400.3 ! ! ... Not reviewed / Quality not known
Ann. Median 32.27 ! " ... Relative Uncertainty +/-10%
Annual Total 146132 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 7470 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1987
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 25.14 & 148.9 "2743 " 435.3 " 154.1 " 5.971& 0.530& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 23.36 & 137.9 "2153 " 426.8 " 116.3 " 6.560& 0.342& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 24.23 & 151.8 "1504 " 383.8 " 95.06 " 6.655& 0.107& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 24.84 & 239.6 "1050 " 348.4 " 81.02 & 6.005& 0.010& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 25.29 & 224.1 " 805.6 " 312.8 " 69.53 & 5.482& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 44.29 & 312.2 " 664.9 " 277.3 " 64.02 & 5.719& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 96.84 & 400.6 " 574.3 " 245.9 " 59.44 & 5.999& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 166.8 " 406.8 " 503.1 " 217.1 " 55.37 & 4.985& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 358.9 & 157.2 " 429.2 " 439.4 " 198.0 " 52.87 & 3.521& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 711.9 " 183.5 " 497.2 " 384.3 " 180.5 " 47.26 & 4.653& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 449.3 " 180.3 " 511.7 " 341.8 " 163.8 " 42.66 & 4.083& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 414.5 " 152.2 " 347.6 " 325.0 " 148.9 " 40.71 & 2.908& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 241.7 " 143.7 " 268.1 " 405.8 " 137.3 " 40.23 & 1.429& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 164.2 " 120.0 " 223.4 " 392.5 " 127.4 " 39.64 & 1.842& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 114.0 " 114.2 " 194.6 " 449.5 " 114.9 " 39.81 & 5.181& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 88.70 & 118.6 " 181.9 " 464.7 " 102.7 " 31.58 & 2.777& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 73.20 & 141.6 " 175.5 " 352.3 " 91.19 & 26.19 & 3.241& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 64.10 & 175.5 " 164.6 " 297.1 " 84.71 & 25.42 & 1.919& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 53.15 & 319.5 " 149.0 " 268.1 " 96.01 " 27.47 & 0.493& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 47.27 & 423.0 " 138.6 " 312.7 " 125.9 " 22.52 & 0.264& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 45.15 & 370.9 " 124.9 " 790.2 " 125.1 " 17.38 & 0.081& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 43.08 & 345.3 " 114.2 " 800.0 " 103.6 " 15.57 & 0.031& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 38.12 & 322.7 " 117.8 " 824.0 " 101.4 " 13.89 & 0.381& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 37.89 & 253.5 " 122.0 " 586.5 " 116.7 " 12.63 & 1.265& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 34.47 & 201.3 " 163.2 " 707.5 " 133.2 " 11.26 & 1.947& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 37.35 & 183.4 " 148.8 "1269 " 150.1 " 8.851& 1.492& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 38.79 & 177.5 " 144.7 "1725 " 199.2 " 8.625& 1.258& 0.736& 27
28 0.000& 0.000& 0.000& 0.000& 35.95 & 165.9 " 173.8 "1330 " 207.5 " 8.225& 0.395& 16.36 & 28
29 0.000& 0.000& 0.000& 34.22 & 157.6 " 737.3 " 765.9 " 190.4 " 7.282& 0.622& 10.36 & 29
30 0.000& 0.000& 0.000& 31.29 & 162.5 "2084 " 565.4 " 185.5 " 6.049& 1.222& 5.309& 30
31 0.000& 0.000& 29.03 & 5759 " 472.2 " 7.613& 1.857& 31
Mean 0.000& 0.000& 0.000& 0.000& 102.7 & 166.7 & 483.7 " 782.9 " 191.0 & 40.28 & 2.946& 1.149&
Median 0.000& 0.000& 0.000& 0.000& 38.12 & 160.1 & 181.9 " 574.3 " 156.9 & 31.58 & 2.362& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 711.9 & 423.0 &5759 "2743 " 435.3 & 154.1 & 6.655& 16.36 &
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 23.36 & 114.2 " 268.1 " 84.71 & 6.049& 0.031& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 3186 & 5002 &14994 "24271 " 5732 & 1248 & 88.38& 35.62&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 149.4 & " ... Relative Uncertainty +/-10%
Ann. Median 5.971& & ... Relative Uncertainty +/-30%
Annual Total 54560 &
Maximum Minimum
Daily 5759 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1988
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.559& 0.000& 0.000& 0.000& 0.000& 68.14 & 562.0 " 927.7 " 790.2 " 913.1 ! 27.18 & 0.000& 1
2 0.131& 0.000& 0.000& 0.000& 0.000& 204.6 & 485.1 " 808.8 " 593.9 "1201 ! 25.22 & 0.000& 2
3 0.005& 0.000& 0.000& 0.000& 0.000& 789.6 ! 415.0 " 728.8 " 479.2 " 645.5 " 25.75 & 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 8.102&1514 ! 367.0 " 648.9 " 405.9 " 549.7 " 22.66 & 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 63.28 &1027 ! 358.6 " 578.8 " 364.4 " 496.9 " 19.03 & 53.77 & 5
6 0.000& 0.000& 0.000& 0.000& 62.76 & 684.0 " 354.7 " 519.0 " 363.2 " 599.7 " 17.56 & 303.6 & 6
7 0.000& 0.000& 0.000& 0.000& 54.61 & 575.1 " 394.6 " 466.6 " 424.9 " 527.0 " 16.81 & 426.5 " 7
8 0.000& 0.000& 0.000& 0.000& 39.07 & 518.1 " 571.0 " 422.9 " 565.7 " 393.7 " 19.01 & 305.2 " 8
9 0.000& 0.000& 0.000& 0.000& 27.24 & 462.8 " 707.3 " 393.1 " 769.3 " 337.1 " 19.46 & 201.7 " 9
10 0.000& 0.000& 0.000& 0.000& 24.40 & 391.5 " 838.1 " 402.9 " 672.9 " 340.5 " 14.64 & 130.7 " 10
11 0.000& 0.000& 0.000& 0.000& 17.93 & 343.6 " 626.5 " 441.9 " 539.6 " 276.0 " 11.15 & 86.02 & 11
12 0.000& 0.000& 0.000& 0.000& 19.84 & 309.3 " 505.8 " 954.8 " 446.6 " 227.6 " 10.13 & 55.78 & 12
13 0.000& 0.000& 0.000& 0.000& 23.07 & 369.8 " 608.4 "1961 " 362.0 " 187.9 " 11.53 & 38.55 & 13
14 0.000& 0.000& 0.000& 0.000& 35.87 & 434.3 " 961.7 "2751 " 312.0 " 165.3 " 11.12 & 25.39 & 14
15 0.000& 0.000& 0.000& 0.000& 58.00 & 926.1 "1947 "2230 " 283.1 " 140.2 " 10.07 & 17.64 & 15
16 0.000& 0.000& 0.000& 0.000& 108.3 &1128 "1156 "3494 " 259.1 " 128.8 " 8.431& 12.71 & 16
17 0.000& 0.000& 0.000& 0.000& 145.2 " 850.6 "1016 "4162 " 231.5 " 112.4 " 5.284& 12.41 & 17
18 0.000& 0.000& 0.000& 0.000& 117.9 " 756.1 " 958.1 "2486 " 208.4 " 104.7 " 1.401& 9.978& 18
19 0.000& 0.000& 0.000& 0.000& 83.94 & 904.7 " 817.9 "1702 " 181.9 " 108.0 " 1.174& 7.994& 19
20 0.000& 0.000& 0.000& 0.000& 74.60 & 815.1 " 889.4 "1356 " 173.3 " 103.9 " 1.569& 5.304& 20
21 0.000& 0.000& 0.000& 0.000& 89.75 & 599.1 " 687.7 "1113 " 164.8 " 112.2 " 1.461& 4.001& 21
22 0.000& 0.000& 0.000& 0.000& 131.6 " 485.2 " 552.8 " 936.8 " 185.5 " 99.70 & 1.767& 2.473& 22
23 0.000& 0.000& 0.000& 0.000& 170.1 " 395.0 " 560.6 " 779.8 " 234.8 " 83.47 & 1.837& 1.486& 23
24 0.000& 0.000& 0.000& 0.000& 148.9 " 331.2 "1915 " 659.1 " 214.0 " 77.05 & 1.321& 0.657& 24
25 0.000& 0.000& 0.000& 0.000& 133.1 " 335.8 "7766 " 633.7 " 280.2 " 67.53 & 0.409& 0.078& 25
26 0.000& 0.000& 0.000& 0.000& 103.6 " 547.7 "6884 " 702.9 " 282.8 " 59.39 & 0.098& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 88.73 &1378 "3213 " 790.1 " 224.9 " 51.19 & 0.022& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 79.91 &1704 "2148 " 774.9 " 191.6 " 45.09 & 0.002& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 72.05 &1012 "1666 " 631.3 " 210.2 " 38.62 & 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 66.64 & 702.2 "1334 " 698.3 " 407.5 " 35.08 & 0.000& 0.000& 30
31 0.000& 0.000& 61.89 & 1098 " 695.4 " 30.32 & 0.000& 31
Mean 0.022& 0.000& 0.000& 0.000& 68.09 & 685.5 !1366 "1156 " 360.8 " 266.4 ! 9.538& 54.91 &
Median 0.000& 0.000& 0.000& 0.000& 63.28 & 587.1 ! 817.9 " 774.9 " 297.6 " 128.8 ! 9.251& 5.304&
Maximum 0.559& 0.000& 0.000& 0.000& 170.1 &1704 !7766 "4162 " 790.2 "1201 ! 27.18 & 426.5 &
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 68.14 ! 354.7 " 393.1 " 164.8 " 30.32 ! 0.000& 0.000&
Total 0.70& 0.00& 0.00& 0.00& 2110 &20566 !42372 "35857 "10824 " 8260 ! 286.1 & 1702 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 333.2 ! ! ... Not reviewed / Quality not known
Ann. Median 32.70 ! " ... Relative Uncertainty +/-10%
Annual Total 121981 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 7766 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1989
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 604.9 "1111 "1070 " 203.1 ! 55.02 & 16.18 & 0.015& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 712.0 "3100 " 947.3 " 184.2 ! 63.09 & 13.95 & 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 593.0 "3984 " 852.5 " 158.5 ! 104.2 & 12.02 & 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 491.8 "4151 " 785.9 " 139.0 ! 101.7 " 7.753& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 406.7 "4112 " 704.7 " 126.9 ! 105.9 " 8.051& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 336.4 "3896 " 652.0 " 117.3 ! 94.00 & 8.506& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 275.9 "3653 " 601.6 " 106.0 ! 96.97 " 7.872& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 240.3 "3441 " 555.8 " 102.7 ! 88.24 & 5.728& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 209.6 "3258 " 535.7 " 99.48 ! 73.85 & 6.898& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 181.6 "2953 " 516.6 " 92.82 ! 63.84 & 5.409& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 171.6 "2708 " 499.3 " 87.13 ! 53.41 & 4.359& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 192.6 "2458 " 477.8 " 85.34 ! 49.13 & 4.122& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 262.5 "2225 " 451.2 " 86.94 ! 47.36 & 3.461& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 719.0 "2079 " 422.3 " 83.90 ! 38.50 & 3.707& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000&1772 "1895 " 394.9 " 80.81 ! 36.64 & 2.433& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000&1049 "1757 " 361.5 " 82.52 ! 31.67 & 1.799& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 754.6 "1713 " 342.0 " 86.67 ! 34.17 & 1.741& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 817.7 "1579 " 447.7 " 86.81 ! 32.75 & 17.98 & 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 713.8 "1421 " 740.9 " 84.43 ! 33.48 & 27.69 & 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 527.7 "1385 "1275 " 80.69 & 33.51 & 20.53 & 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 413.0 "1753 "1035 ! 100.5 " 27.37 & 14.13 & 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 331.5 "2219 " 765.6 ! 124.5 " 27.76 & 10.73 & 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.361& 286.5 "2040 " 644.2 ! 127.2 " 52.14 & 9.103& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 471.9 & 261.9 "1690 " 539.8 ! 124.8 " 54.76 & 7.895& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 418.8 " 251.0 "1536 " 399.0 ! 113.7 " 40.54 & 6.947& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 345.6 " 241.9 "1426 " 345.9 ! 94.58 & 35.63 & 4.975& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 261.7 " 238.1 "1450 " 362.1 ! 79.37 & 29.37 & 3.201& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 270.2 " 258.5 "1528 " 296.2 ! 70.11 & 24.46 & 1.259& 0.000& 28
29 0.000& 0.000& 0.000& 276.5 " 300.7 "1684 " 276.1 ! 64.57 & 23.67 & 0.779& 0.000& 29
30 0.000& 0.000& 0.000& 323.0 " 396.9 "1608 " 248.9 ! 60.64 & 20.88 & 0.452& 0.000& 30
31 0.000& 0.000& 575.4 " 1318 " 223.3 ! 18.56 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 94.96 & 467.1 "2294 " 573.3 ! 104.5 ! 51.38 & 7.990& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 334.0 "1895 " 516.6 ! 93.70 ! 40.54 & 6.923& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 575.4 &1772 "4151 "1275 ! 203.1 ! 105.9 & 27.69 & 0.015&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 171.6 "1111 " 223.3 ! 60.64 ! 18.56 & 0.452& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 2943 &14014 "71143 "17774 ! 3136 ! 1592 & 239.6 & 0.02&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 303.6 ! ! ... Not reviewed / Quality not known
Ann. Median 3.707! " ... Relative Uncertainty +/-10%
Annual Total 110845 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 4151 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1990
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.00& 3301 " 720.5 " 36.74& 149.6 " 146.4 " 89.76" 840.1 " 325.1 " 111.7 " 29.60& 0.00& 1
2 0.00& 2667 " 630.3 " 33.81& 145.1 " 151.3 " 87.45& 897.7 " 286.9 " 94.63" 26.84& 0.00& 2
3 0.00& 1385 " 581.5 " 32.05& 140.8 " 145.3 " 86.54& 1011 " 257.1 " 84.86& 27.59& 0.00& 3
4 0.00& 898.3 " 558.9 " 29.04& 139.5 " 132.0 " 85.25& 2045 " 234.0 " 75.10& 27.02& 0.00& 4
5 0.00& 642.9 " 513.0 " 26.33& 137.3 " 117.2 " 82.86& 1835 " 211.8 " 69.50& 23.22& 0.00& 5
6 0.00& 610.1 " 460.4 " 24.77& 133.6 " 148.4 " 80.66& 1557 " 193.4 " 80.51& 22.23& 0.00& 6
7 0.00& 773.2 " 422.2 " 22.77& 131.2 " 217.2 " 79.50& 1192 " 189.0 " 93.06& 20.04& 0.00& 7
8 0.00& 1039 " 375.4 " 127.1 & 128.7 " 283.8 " 79.47& 946.4 " 181.4 " 91.33& 17.62& 0.00& 8
9 0.00& 1419 " 303.4 " 141.7 " 128.4 " 316.0 " 80.06& 775.5 " 182.6 " 88.69& 15.52& 0.00& 9
10 0.00& 1763 " 260.4 " 155.2 " 125.6 " 328.0 " 88.13& 676.1 " 215.1 " 117.1 " 13.43& 0.00& 10
11 0.00& 2664 " 242.7 " 243.1 " 123.5 " 338.4 " 106.1 " 625.2 " 202.8 " 104.8 " 10.98& 0.00& 11
12 0.00& 3822 " 382.7 " 333.1 " 120.3 " 310.4 " 163.0 " 595.7 " 181.4 " 92.81& 10.29& 0.00& 12
13 0.00& 3501 " 837.9 " 261.8 " 127.0 " 280.6 " 359.8 " 604.7 " 178.9 " 114.4 " 8.37& 0.00& 13
14 0.00& 4467 " 444.1 " 194.9 " 132.9 " 283.8 " 414.8 " 577.7 " 164.8 " 152.4 " 7.56& 0.00& 14
15 0.00& 3878 " 568.8 " 163.4 " 123.8 " 287.1 " 745.0 " 528.0 " 142.3 " 120.6 " 7.22& 0.00& 15
16 0.00& 3072 " 462.0 " 150.3 " 105.8 " 267.8 " 877.6 " 500.8 " 128.4 " 98.00" 5.62& 0.00& 16
17 0.00& 3231 " 309.8 " 142.1 " 104.9 " 243.2 " 1313 " 505.5 " 124.1 " 87.82& 4.13& 0.00& 17
18 0.00& 3000 " 247.5 " 139.5 " 157.8 " 217.3 " 1515 " 549.3 " 132.5 " 73.87& 2.14& 0.00& 18
19 0.00& 2772 " 208.8 " 152.5 " 146.5 " 190.8 " 1468 " 684.4 " 143.2 " 64.29& 2.02& 0.00& 19
20 0.00& 2525 " 192.9 " 207.3 " 235.2 " 168.3 " 1056 " 839.4 " 139.4 " 58.15& 2.05& 0.00& 20
21 0.00& 2237 " 182.8 " 302.4 " 431.3 " 150.3 " 888.8 " 745.3 " 139.4 " 49.77& 1.37& 0.00& 21
22 0.00& 2024 " 174.4 " 344.0 " 573.8 " 138.8 " 1226 " 625.1 " 137.8 " 42.53& 0.91& 0.00& 22
23 0.00& 1769 " 168.3 " 237.1 " 349.2 " 127.5 " 2498 " 540.3 " 143.0 " 36.37& 0.43& 0.00& 23
24 0.00& 1563 " 142.1 " 196.3 " 235.0 " 119.6 " 2966 " 470.8 " 157.9 " 32.48& 0.12& 0.00& 24
25 0.00& 1330 " 105.2 & 194.1 " 226.7 " 111.2 " 3489 " 406.2 " 239.7 " 30.41& 0.02& 0.00& 25
26 0.00& 1139 " 79.69& 179.5 " 191.1 " 105.9 " 2764 " 359.1 " 224.8 " 26.93& 0.00& 0.00& 26
27 0.00& 983.9 " 66.35& 169.7 " 158.0 " 99.74" 2118 " 325.6 " 238.5 " 24.69& 0.00& 0.00& 27
28 6.02& 837.6 " 55.14& 161.5 " 144.3 " 95.25" 1505 " 315.8 " 212.2 " 20.70& 0.00& 0.00& 28
29 3912 " 44.08& 155.1 " 165.2 " 91.39& 1171 " 326.7 " 182.6 " 24.25& 0.00& 0.00& 29
30 11558 " 39.88& 152.7 " 166.9 " 91.78" 1023 " 342.5 " 143.0 " 24.41& 0.00& 0.00& 30
31 6972 " 38.40& 143.3 " 929.8 " 357.0 " 28.72& 0.00& 31
Mean 724.1 &2118 " 316.7 & 157.0 & 178.1 " 190.1 & 949.7 & 729.2 " 187.8 " 71.45 & 9.544& 0.000&
Median 0.000&1897 " 260.3 & 155.1 & 143.3 " 150.8 & 877.6 & 604.7 " 182.0 " 75.10 & 6.419& 0.000&
Maximum 11558 & 4467 " 837.9 & 344.0 & 573.8 " 338.4 & 3489 & 2045 " 325.1 " 152.4 & 29.60& 0.00&
Minimum 0.000& 610.1 " 38.40 & 22.77 & 104.9 " 91.39 & 79.46 & 315.8 " 124.1 " 20.70 & 0.000& 0.000&
Total 22449 &59326 " 9820 & 4710 & 5523 " 5705 &29443 &22605 " 5634 " 2215 & 286.3 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 459.5 & " ... Relative Uncertainty +/-10%
Ann. Median 143.0 & & ... Relative Uncertainty +/-30%
Annual Total 167721 &
Maximum Minimum
Daily 11558 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1991
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 400.7 "2119 " 332.9 " 79.25 & 6.840& 0.163& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 417.3 "3174 " 300.4 " 69.22 & 6.231& 0.006& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 583.7 "6295 " 278.2 " 56.85 & 6.687& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000&1191 "6107 " 258.6 " 57.85 & 10.57 & 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 40.02 &1422 "4435 " 240.6 " 56.60 & 16.28 & 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 173.4 "1110 "3901 " 229.0 " 53.54 & 23.61 & 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 315.2 " 693.7 "2562 " 225.4 " 50.07 & 23.68 & 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 197.1 " 583.6 "1872 " 246.1 " 47.47 & 32.62 & 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 112.0 " 527.7 "1519 " 375.7 " 47.91 & 24.74 & 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 85.55 & 449.8 "1261 " 478.3 " 44.70 & 19.19 & 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 66.62 & 391.2 "1084 " 593.9 " 37.67 & 15.67 & 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 61.49 & 351.0 " 981.3 " 507.3 " 35.75 & 19.35 & 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 70.79 & 331.4 " 860.7 " 378.1 " 33.13 & 19.26 & 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 144.5 & 310.3 " 753.3 " 392.0 " 29.76 & 14.88 & 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 442.2 " 303.8 " 676.4 " 615.0 " 24.62 & 12.59 & 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 535.2 " 417.5 " 631.6 "1137 " 20.92 & 8.762& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 697.3 " 899.1 " 603.6 " 921.9 " 17.48 & 6.362& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 594.1 "1502 " 593.7 " 698.2 " 23.83 & 7.387& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 434.3 "2023 " 590.7 " 510.9 " 22.42 & 6.677& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 284.0 "2824 " 616.7 " 401.7 " 25.07 & 6.232& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 210.6 "3097 " 655.5 " 343.6 " 27.53 & 6.142& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 162.9 "2988 " 608.2 " 299.9 " 24.19 & 5.266& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 148.8 "2067 " 537.5 " 259.6 " 24.30 & 4.637& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 216.4 "1802 " 479.9 " 216.9 " 29.88 & 4.556& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 394.4 "1742 " 429.9 " 183.0 " 31.58 & 4.391& 3.315& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 527.6 "1644 " 382.0 " 155.4 " 24.60 & 3.005& 27.72 & 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 474.5 "1506 " 384.0 " 133.4 " 20.10 & 2.741& 8.961& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 556.8 "1379 " 378.9 " 115.8 " 17.39 & 1.867& 13.60 & 28
29 0.000& 0.000& 0.000& 0.000& 485.6 "1237 " 539.6 " 99.69 & 12.90 & 1.164& 11.39 & 29
30 0.000& 0.000& 0.000& 0.000& 508.6 "1341 " 489.4 " 88.67 & 11.10 & 0.652& 6.540& 30
31 0.000& 0.000& 0.000& 1771 " 393.1 " 9.190& 3.724& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 264.6 &1203 "1481 " 367.2 & 34.41 & 10.73 & 2.434&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 203.8 &1191 " 655.5 " 300.1 & 29.76 & 6.764& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 697.3 &3097 "6295 "1137 & 79.25 & 32.62 & 27.72 &
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 303.8 " 378.9 " 88.67 & 9.190& 0.652& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 7940 &37315 "45922 "11018 & 1066 & 322.0 & 75.44&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 284.0 & " ... Relative Uncertainty +/-10%
Ann. Median 2.741& & ... Relative Uncertainty +/-30%
Annual Total 103662 &
Maximum Minimum
Daily 6295 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1992
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 1.806& 0.000& 0.000& 0.000& 20.06 & 36.25 &2649 " 543.4 "3704 "1471 " 58.48 & 44.48 & 1
2 0.623& 0.000& 0.000& 0.032& 18.97 & 33.25 &2318 "1021 "3407 "1439 " 51.69 & 40.95 & 2
3 0.097& 0.000& 0.000& 7.800& 16.94 & 31.61 &1965 "1305 "3185 "1490 " 50.15 & 40.61 & 3
4 0.006& 0.000& 0.000& 23.79 & 16.64 & 30.31 &1490 "1884 "3823 "1495 " 54.91 & 37.27 & 4
5 0.000& 0.000& 0.000& 19.89 & 22.39 & 29.57 &1181 "2025 "4994 "1368 " 61.06 & 35.27 & 5
6 0.000& 0.000& 0.000& 30.24 & 29.22 & 27.76 & 956.2 "2059 "4548 "1245 " 56.66 & 31.57 & 6
7 0.000& 0.000& 0.000& 26.33 & 25.53 & 26.12 & 759.9 "2254 "4476 "1131 " 47.36 & 29.50 & 7
8 0.000& 0.000& 0.000& 31.14 & 23.71 & 25.15 & 662.8 "1793 "3707 "1094 " 45.67 & 21.71 & 8
9 0.000& 0.000& 0.000& 140.4 & 21.10 & 23.39 & 599.9 "2300 "3102 "1031 " 45.79 & 16.66 & 9
10 0.000& 0.000& 0.000& 209.6 & 19.63 & 22.82 & 595.8 "2726 "3000 " 973.7 " 48.14 & 8.740& 10
11 0.000& 0.000& 0.000& 574.3 " 25.19 & 27.65 & 660.6 "3280 "3201 " 922.3 " 49.55 & 8.682& 11
12 0.000& 0.000& 0.000& 401.6 " 38.37 & 43.13 &1054 "2740 "3100 " 881.9 " 53.43 & 10.30 & 12
13 0.000& 0.000& 0.000& 254.9 " 42.89 & 100.5 &1140 "1929 "3019 " 872.3 " 60.86 & 7.592& 13
14 0.000& 0.000& 0.000& 163.8 " 32.90 & 205.0 "1633 "1607 "2983 " 863.1 " 56.08 & 4.517& 14
15 0.000& 0.000& 0.000& 109.5 " 29.94 & 579.8 "2518 "1508 "2845 " 835.3 " 246.8 & 1.389& 15
16 0.000& 0.000& 0.000& 84.49 & 25.87 & 708.8 "1920 "1810 "2870 " 864.9 " 138.0 " 0.432& 16
17 0.000& 0.000& 0.000& 68.16 & 22.50 & 637.0 "1236 "1854 "2869 " 896.7 " 114.1 " 0.061& 17
18 0.000& 0.000& 0.000& 60.64 & 20.81 & 818.7 "1150 "1975 "2850 " 707.2 " 68.99 & 0.019& 18
19 0.000& 0.000& 0.000& 46.22 & 19.44 & 863.9 "1631 "1530 "3074 " 450.8 " 72.50 & 0.000& 19
20 0.000& 0.000& 0.000& 43.77 & 21.03 & 982.0 "1540 "1362 "3161 " 292.9 " 96.04 & 0.000& 20
21 0.000& 0.000& 0.000& 44.17 & 17.81 & 743.7 "2215 "1387 "3155 " 222.8 " 86.36 & 0.000& 21
22 0.000& 0.000& 0.000& 39.60 & 17.81 & 627.6 "2043 "1905 "3128 " 183.5 " 68.72 & 0.000& 22
23 0.000& 0.000& 0.000& 39.09 & 18.92 & 631.3 "1389 "2325 "2911 " 159.9 " 56.44 & 0.000& 23
24 0.000& 0.000& 0.000& 40.54 & 18.22 & 602.1 "1098 "2540 "2726 " 137.8 " 54.13 & 0.000& 24
25 0.000& 0.000& 0.000& 37.08 & 22.61 & 456.6 " 933.4 "2692 "2497 " 111.3 " 60.44 & 0.000& 25
26 0.000& 0.000& 0.000& 32.38 & 21.69 & 400.8 " 793.9 "3060 "2204 " 91.23 & 57.65 & 0.000& 26
27 0.000& 0.000& 0.000& 25.74 & 22.74 & 415.5 " 671.7 "3402 "1993 " 84.29 & 56.92 & 0.000& 27
28 0.000& 0.000& 0.000& 24.12 & 30.55 & 587.5 " 663.1 "3856 "1789 " 83.39 & 52.70 & 0.000& 28
29 0.000& 0.000& 0.000& 26.86 & 36.37 &1412 " 667.2 "4424 "1655 " 87.13 & 51.64 & 0.000& 29
30 0.000& 0.000& 25.87 & 41.10 &3304 " 605.4 "5261 "1562 " 72.80 & 48.49 & 0.000& 30
31 0.000& 0.000& 39.46 & 571.0 "4040 " 65.58 & 0.000& 31
Mean 0.082& 0.000& 0.000& 87.74 & 25.17 & 481.2 &1268 "2335 "3051 " 697.7 & 69.00 & 10.96 &
Median 0.000& 0.000& 0.000& 39.35 & 22.50 & 408.1 &1140 "2025 "3047 " 863.1 & 56.55 & 0.432&
Maximum 1.806& 0.000& 0.000& 574.3 & 42.89 &3304 &2649 "5261 "4994 "1495 & 246.8 & 44.48 &
Minimum 0.000& 0.000& 0.000& 0.000& 16.64 & 22.82 & 571.0 " 543.4 "1562 " 65.58 & 45.67 & 0.000&
Total 2.53& 0.00& 0.00& 2632 & 780.5 &14436 &39319 "72411 "91554 "21630 & 2070 & 339.8 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 669.8 & " ... Relative Uncertainty +/-10%
Ann. Median 44.32 & & ... Relative Uncertainty +/-30%
Annual Total 245177 &
Maximum Minimum
Daily 5261 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1993
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 18.46 & 28.28 & 169.3 "1155 " 926.5 " 676.0 " 192.4 " 20.98 & 13.55 & 1
2 0.000& 0.000& 0.000& 15.86 & 40.50 & 168.3 "1005 " 680.3 " 549.3 " 235.6 " 21.94 & 10.60 & 2
3 0.000& 0.000& 0.000& 14.95 & 102.9 & 187.9 " 812.6 " 577.8 " 430.3 " 281.3 " 21.23 & 8.065& 3
4 0.000& 0.000& 0.000& 13.55 & 171.1 " 174.9 " 826.5 " 520.5 " 407.9 " 249.9 " 18.98 & 4.373& 4
5 0.000& 0.000& 0.000& 13.72 & 253.9 " 138.5 " 734.7 " 600.2 " 592.7 " 240.4 " 20.17 & 2.010& 5
6 0.000& 0.000& 0.000& 14.46 & 242.7 " 108.3 " 532.2 "1092 "1064 " 211.0 " 16.97 & 0.768& 6
7 0.000& 0.000& 0.000& 14.36 & 171.1 " 88.85 & 439.1 "1999 "1059 " 173.9 " 14.72 & 0.137& 7
8 0.000& 0.000& 0.000& 14.04 & 152.2 " 93.16 & 384.4 "2626 "1347 " 143.4 " 13.05 & 0.009& 8
9 0.000& 0.000& 0.000& 13.32 & 139.9 " 104.1 " 329.9 "1932 "1623 " 126.9 " 27.60 & 0.000& 9
10 0.000& 0.000& 0.000& 13.05 & 117.9 " 155.0 " 293.3 "1709 "1514 " 109.6 " 46.83 & 0.000& 10
11 0.000& 0.000& 0.000& 17.25 & 93.67 " 184.0 " 277.3 "1448 " 914.3 " 96.26 & 68.25 & 0.000& 11
12 0.000& 0.000& 0.000& 29.12 & 82.98 & 171.9 " 461.3 "1101 " 685.2 " 82.87 & 120.6 & 0.000& 12
13 0.000& 0.000& 0.000& 34.29 & 76.51 & 135.7 " 694.2 " 977.5 " 604.8 " 73.33 & 52.48 & 0.000& 13
14 0.000& 0.000& 0.000& 36.19 & 68.72 & 110.5 " 769.0 " 951.0 " 550.1 " 72.67 & 41.31 & 0.000& 14
15 0.000& 2.836& 0.000& 42.44 & 60.00 & 93.54 & 617.9 " 815.0 " 525.7 " 68.90 & 36.17 & 0.000& 15
16 0.000& 13.79 & 0.000& 50.46 & 52.42 & 84.52 & 453.7 " 651.2 " 467.2 " 63.13 & 34.96 & 0.000& 16
17 0.000& 11.44 & 0.000& 53.73 & 47.46 & 82.08 & 528.6 " 606.0 " 431.3 " 57.29 & 33.38 & 0.000& 17
18 0.000& 10.45 & 0.000& 53.94 & 47.36 & 100.2 & 588.5 " 994.0 " 457.2 " 53.23 & 36.24 & 0.000& 18
19 0.000& 9.561& 0.000& 52.90 & 44.49 & 129.3 " 537.8 " 988.7 " 499.8 " 48.22 & 34.66 & 0.000& 19
20 0.000& 5.831& 0.024& 50.55 & 41.03 & 137.8 " 483.6 " 804.2 " 491.9 " 44.91 & 136.8 & 0.000& 20
21 0.000& 2.553& 18.79 & 44.74 & 48.32 & 126.8 " 430.9 " 723.1 " 432.9 " 39.77 & 134.2 " 0.000& 21
22 0.000& 1.766& 742.5 & 40.70 & 51.36 & 115.5 " 405.1 " 619.9 " 355.0 " 36.02 & 87.65 & 0.000& 22
23 0.000& 0.984& 388.9 " 37.77 & 39.74 & 103.7 " 397.7 " 540.2 " 305.9 " 32.08 & 67.15 & 0.000& 23
24 0.000& 0.299& 206.2 " 36.21 & 37.99 & 91.59 " 395.1 " 494.7 " 274.6 " 31.57 & 56.95 & 0.000& 24
25 0.000& 0.026& 126.0 " 33.36 & 42.67 & 108.1 " 380.8 " 460.3 " 241.1 " 30.56 & 47.03 & 0.000& 25
26 0.000& 0.000& 86.35 & 30.69 & 43.53 & 229.3 " 357.3 " 435.7 " 214.4 " 27.51 & 39.34 & 0.000& 26
27 0.000& 0.000& 62.34 & 27.14 & 46.76 & 437.3 " 353.2 " 533.8 " 196.1 " 23.19 & 32.88 & 0.000& 27
28 0.000& 0.000& 47.27 & 24.06 & 55.70 & 914.3 " 356.1 " 704.1 " 179.6 " 25.30 & 28.63 & 0.000& 28
29 0.000& 35.98 & 20.09 & 60.04 &1532 " 410.4 " 576.4 " 175.1 " 24.65 & 20.91 & 0.000& 29
30 0.000& 27.96 & 18.02 & 110.6 &1549 " 652.7 " 520.0 " 170.0 " 21.70 & 18.16 & 0.000& 30
31 0.000& 21.75 & 114.6 " 864.6 " 586.7 " 19.85 & 0.000& 31
Mean 0.000& 2.127& 56.91 & 29.31 & 86.67 & 260.8 & 546.1 " 909.6 " 581.3 " 94.77 & 45.01 & 1.275&
Median 0.000& 0.000& 0.000& 28.13 & 60.00 & 132.5 & 461.3 " 704.1 " 479.6 " 63.13 & 34.81 & 0.000&
Maximum 0.000& 13.79 & 742.5 & 53.94 & 253.9 &1549 &1155 "2626 "1623 " 281.3 & 136.8 & 13.55 &
Minimum 0.000& 0.000& 0.000& 13.05 & 28.28 & 82.08 & 277.3 " 435.7 " 170.0 " 19.85 & 13.05 & 0.000&
Total 0.00& 59.55& 1764 & 879.5 & 2687 & 7826 &16931 "28199 "17439 " 2937 & 1350 & 39.53&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 219.4 & " ... Relative Uncertainty +/-10%
Ann. Median 47.27 & & ... Relative Uncertainty +/-30%
Annual Total 80115 &
Maximum Minimum
Daily 2626 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1994
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 466.0 " 856.6 " 279.0 " 204.7 " 31.99 & 3.874& 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 505.0 "1302 " 254.6 " 233.1 " 31.30 & 4.929& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 646.9 "1960 " 234.4 " 254.5 " 32.14 & 2.340& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 748.9 "1861 " 334.4 " 256.0 " 32.88 & 1.484& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 638.8 "1446 " 659.4 " 265.3 " 28.91 & 1.139& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 526.9 "1194 "1291 " 275.1 " 31.03 & 1.177& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 443.6 " 962.4 "1236 " 229.4 " 29.70 & 1.042& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 323.7 " 802.3 " 710.7 " 185.9 " 27.43 & 0.656& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 247.2 " 862.5 " 533.7 " 158.6 " 26.20 & 0.262& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 206.7 "1110 " 513.9 " 161.5 " 25.13 & 0.031& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 173.0 "1411 "1132 " 221.2 " 24.21 & 0.000& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 155.6 "1234 "3825 " 277.4 " 23.32 & 0.000& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 141.2 " 951.9 "2003 " 697.4 " 20.56 & 0.000& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 128.0 " 848.5 "1244 " 477.3 " 25.87 & 0.000& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 114.7 " 817.2 " 914.9 " 311.0 " 23.27 & 0.000& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 104.4 " 801.8 " 728.9 " 231.8 " 20.35 & 0.000& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 96.00 " 719.0 " 599.1 " 184.8 " 18.72 & 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 90.44 " 637.8 " 515.4 " 160.9 " 17.44 & 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 102.5 " 592.2 " 444.1 " 135.6 " 17.63 & 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 155.8 " 548.0 " 388.6 " 114.1 " 16.41 & 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 431.6 " 503.6 " 344.8 " 95.94 & 14.71 & 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000&1129 " 463.2 " 314.2 " 83.96 & 12.92 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000&1625 " 448.4 " 288.2 " 72.48 & 10.81 & 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000&1434 " 518.2 " 270.1 " 63.47 & 8.655& 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000&1070 " 929.2 " 254.3 " 56.30 & 8.603& 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 873.9 " 850.7 " 237.4 " 48.54 & 8.093& 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 1.258& 740.8 " 634.2 " 218.9 " 43.40 & 7.745& 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 249.1 & 639.6 " 505.3 " 201.1 " 40.27 & 7.155& 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 572.4 " 603.1 " 437.5 " 185.6 " 37.10 & 7.973& 0.000& 0.000& 29
30 0.000& 0.000& 0.000&1012 " 580.5 " 373.4 " 180.1 " 33.41 & 4.461& 0.000& 0.000& 30
31 0.000& 0.000& 720.7 " 316.7 " 188.1 " 2.488& 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 82.46 & 504.9 " 867.8 " 662.2 " 187.0 & 19.29 & 0.565& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 454.8 " 817.2 " 388.6 " 173.1 & 20.35 & 0.000& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000&1012 &1625 "1960 "3825 " 697.4 & 32.88 & 4.929& 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 90.44 " 316.7 " 180.1 " 33.41 & 2.488& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 2556 &15147 "26904 "20528 " 5611 & 598.2 & 16.94& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 195.5 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 71362 &
Maximum Minimum
Daily 3825 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1995
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 50.04 & 196.3 "2836 " 487.9 " 97.37 " 61.59 & 2.688& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 42.54 & 183.7 "2105 " 457.5 " 87.49 & 53.44 & 2.330& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 38.06 & 174.6 "1722 " 581.4 " 79.81 & 47.47 & 0.960& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 37.28 & 165.6 "1417 " 680.2 " 69.47 & 45.28 & 0.204& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 45.37 & 158.8 "1185 " 514.2 " 63.65 & 44.85 & 0.037& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 52.54 & 173.4 "1031 " 714.1 " 59.09 & 49.46 & 0.004& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 93.71 & 243.6 " 846.8 " 862.5 " 53.85 & 44.83 & 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 505.2 " 395.1 " 720.5 " 971.6 " 48.17 & 38.49 & 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000&1568 " 683.1 " 773.1 "1202 " 43.63 & 36.37 & 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000&2201 " 933.2 " 944.0 " 752.8 " 42.16 & 34.11 & 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000&1968 "1918 "1266 " 545.3 " 37.38 & 26.10 & 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 132.3 &1273 "2921 "1212 " 467.8 " 35.83 & 21.97 & 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 88.66 & 900.2 "3518 "2301 " 545.7 " 33.77 & 25.08 & 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 74.54 & 646.3 "3042 "1773 " 511.4 " 31.37 & 23.21 & 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 51.01 & 481.2 "2358 "1984 " 641.8 " 28.21 & 20.75 & 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 35.52 & 360.4 "2161 "1451 " 558.7 " 27.03 & 19.85 & 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 32.88 & 286.2 "1820 "1124 " 403.5 " 79.48 & 17.93 & 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 26.71 & 235.2 "1486 " 995.6 " 320.0 " 737.8 " 14.59 & 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 25.52 & 197.1 "1165 " 905.3 " 276.3 "2391 " 13.24 & 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 28.18 & 218.7 "2859 "1036 " 242.7 "2975 " 11.99 & 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 48.84 & 276.5 "6362 " 967.6 " 218.1 "1722 " 11.02 & 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 52.88 & 267.6 "7271 " 952.8 " 191.4 " 960.1 " 10.56 & 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 171.1 & 284.8 "3897 " 876.8 " 168.3 " 732.1 " 8.272& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 211.5 " 328.2 "2446 " 806.1 " 148.1 " 519.6 " 7.913& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 173.9 " 317.7 "4289 " 775.0 " 131.9 " 364.0 " 6.685& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 121.5 " 393.0 "5134 " 737.7 " 117.8 " 270.4 " 5.598& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 170.9 " 317.5 "5087 " 706.6 " 108.8 " 206.9 " 6.290& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 130.4 " 275.8 "2847 " 654.8 " 105.8 " 146.8 " 4.974& 0.000& 28
29 0.000& 0.000& 0.000& 92.09 & 240.0 "3018 " 602.5 " 108.2 " 110.8 " 4.149& 0.000& 29
30 0.000& 0.000& 0.000& 71.32 & 214.2 "4012 " 562.1 " 107.4 " 89.26 & 3.572& 0.000& 30
31 0.000& 0.000& 61.21 & 3993 " 525.9 " 74.80 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 58.10 & 470.5 &2416 "1154 " 438.1 " 394.1 & 23.99 & 0.201&
Median 0.000& 0.000& 0.000& 0.000& 35.52 & 280.6 &2358 " 967.6 " 462.6 " 79.81 & 20.30 & 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 211.5 &2201 &7271 "2836 "1202 "2975 & 61.59 & 2.688&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 37.28 & 158.8 " 525.9 " 105.8 " 27.03 & 3.572& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 1801 &14117 &74924 "35804 "13145 "12219 & 719.7 & 6.22&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 418.4 & " ... Relative Uncertainty +/-10%
Ann. Median 26.10 & & ... Relative Uncertainty +/-30%
Annual Total 152737 &
Maximum Minimum
Daily 7271 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1996
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.00& 0.00& 0.00& 0.00& 0.00& 0.00& 1540 "12527 " 801.0 " 634.4 " 71.08& 17.33& 1
2 0.00& 0.00& 0.00& 0.00& 0.00& 0.00& 1427 " 9253 " 718.0 " 495.4 " 62.34& 17.07& 2
3 0.00& 0.00& 0.00& 0.00& 0.00& 0.00& 1764 " 7255 " 656.8 " 422.8 " 52.85& 14.78& 3
4 0.00& 0.00& 0.00& 0.00& 0.00& 2.47& 2194 " 5810 " 613.2 " 361.8 " 43.13& 12.79& 4
5 0.00& 0.00& 0.00& 0.00& 0.00& 45.13& 2198 " 5804 " 559.2 " 320.2 " 39.77& 11.45& 5
6 0.00& 0.00& 0.00& 0.00& 0.00& 39.40& 1543 " 6388 " 526.0 " 287.4 " 145.7 & 11.22& 6
7 0.00& 0.00& 0.00& 0.00& 0.00& 34.07& 1091 " 5734 " 525.2 " 262.3 " 593.1 " 12.81& 7
8 0.00& 0.00& 0.00& 0.00& 0.00& 30.88& 1198 " 4125 " 524.3 " 234.6 " 1047 " 14.12& 8
9 0.00& 0.00& 0.00& 0.00& 0.00& 22.00& 1579 " 3381 " 512.6 " 208.7 " 774.5 " 11.91& 9
10 0.00& 0.00& 0.00& 0.00& 0.00& 23.65& 2012 " 2897 " 603.4 " 187.7 " 522.3 " 9.82& 10
11 0.00& 0.00& 0.00& 0.00& 0.00& 25.05& 1415 " 2633 " 1073 " 189.4 " 351.0 " 7.46& 11
12 0.00& 0.00& 0.00& 0.00& 0.00& 25.25& 983.8 " 2779 " 828.5 " 169.8 " 249.1 " 4.81& 12
13 0.00& 0.00& 0.00& 0.00& 0.00& 21.19& 821.7 " 3754 " 805.9 " 156.6 " 180.7 " 4.05& 13
14 0.00& 0.00& 0.00& 0.00& 0.00& 20.01& 724.8 " 3963 " 655.2 " 147.5 " 133.8 " 2.93& 14
15 0.00& 0.00& 0.00& 0.00& 0.00& 25.31& 717.2 " 4100 " 643.2 " 135.6 " 123.2 " 2.21& 15
16 0.00& 0.00& 0.00& 0.00& 0.00& 24.33& 1692 " 2901 " 1200 " 127.3 " 136.2 " 1.11& 16
17 0.00& 0.00& 0.00& 0.00& 0.00& 45.67& 4282 " 2520 " 929.1 " 113.0 " 153.7 " 0.60& 17
18 0.00& 0.00& 0.00& 0.00& 0.00& 130.8 &11175 " 2199 " 889.3 " 100.4 " 133.5 " 0.17& 18
19 0.00& 0.00& 0.00& 0.00& 0.00& 312.5 "12076 " 1929 " 754.8 " 91.96& 113.4 " 0.02& 19
20 0.00& 0.00& 0.00& 0.00& 0.00& 1228 " 6886 " 1853 " 708.4 " 81.83& 91.63& 0.00& 20
21 0.00& 0.00& 0.00& 0.00& 0.00& 2105 " 4581 " 2024 " 711.0 " 110.6 & 79.16& 0.00& 21
22 0.00& 0.00& 0.00& 0.00& 0.00& 3321 " 4103 " 2266 " 758.0 " 203.9 " 67.61& 0.00& 22
23 0.00& 0.00& 0.00& 0.00& 0.00& 3708 " 5580 " 2461 " 747.4 " 345.7 " 53.94& 0.00& 23
24 0.00& 0.00& 0.00& 0.00& 0.00& 2477 " 6318 " 2114 " 688.7 " 410.9 " 42.27& 0.00& 24
25 0.00& 0.00& 0.00& 0.00& 0.00& 1598 "11630 " 2343 " 662.7 " 361.0 " 35.93& 0.00& 25
26 0.00& 0.00& 0.00& 0.00& 0.00& 1217 "10689 " 2439 " 539.3 " 282.8 " 29.68& 0.00& 26
27 0.00& 0.00& 0.00& 0.00& 0.00& 1093 " 6919 " 1777 " 838.6 " 197.6 " 24.76& 0.00& 27
28 0.00& 0.00& 0.00& 0.00& 0.00& 1808 " 9378 " 1292 " 1109 " 147.5 " 24.58& 0.00& 28
29 0.00& 0.00& 0.00& 0.00& 0.00& 2084 "12334 " 1118 " 1467 " 122.9 " 20.30& 0.00& 29
30 0.00& 0.00& 0.00& 0.00& 1832 " 7679 " 992.3 " 998.0 " 102.3 " 17.80& 0.00& 30
31 0.00& 0.00& 0.00& 9934 " 895.6 " 85.13& 0.00& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 776.7 &4725 "3598 " 768.3 " 229.0 & 180.4 & 5.053&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 42.26 &2198 "2633 " 714.5 " 189.4 & 85.39 & 1.109&
Maximum 0.00& 0.00& 0.00& 0.00& 0.00& 3708 &12334 "12527 " 1467 " 634.4 & 1047 & 17.33&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 717.2 " 895.6 " 512.6 " 81.83 & 17.80 & 0.000&
Total 0.0& 0.0& 0.0& 0.0& 0.0& 23303 &146478 "111542 " 23050 " 7099 & 5414 & 156.7&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 866.2 & " ... Relative Uncertainty +/-10%
Ann. Median 13.46 & & ... Relative Uncertainty +/-30%
Annual Total 317046 &
Maximum Minimum
Daily 12527 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1997
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000&1116 " 41.08 & 103.1 " 85.28 & 230.6 " 575.9 " 181.8 " 30.20 & 0.001& 1
2 0.000& 0.000& 0.000& 836.3 " 42.03 & 177.3 " 79.77 & 193.9 " 544.5 " 168.9 " 30.13 & 0.000& 2
3 0.000& 0.000& 0.000& 452.0 " 40.11 & 305.1 " 121.8 " 176.8 " 496.2 " 157.7 " 27.94 & 0.000& 3
4 0.000& 0.000& 0.000& 312.6 " 40.47 & 387.3 " 273.8 " 270.1 " 653.2 " 146.3 " 26.57 & 0.000& 4
5 0.000& 0.000& 0.000& 365.9 " 40.60 & 403.4 " 339.6 " 699.4 " 676.0 " 134.9 " 17.10 & 0.000& 5
6 0.000& 0.000& 0.000& 484.2 " 35.05 & 371.7 " 402.9 " 943.6 " 989.5 " 122.9 " 14.49 & 0.000& 6
7 0.000& 0.000& 0.000& 339.4 " 32.31 & 325.4 " 390.2 " 975.2 "1257 " 109.0 " 14.01 & 0.000& 7
8 0.000& 0.000& 0.000& 302.4 " 30.48 & 283.4 " 372.1 " 807.0 "2318 " 100.9 & 14.74 & 0.000& 8
9 0.000& 0.000& 0.000& 403.8 " 29.10 & 287.9 " 320.6 " 744.7 "1507 " 108.3 " 15.10 & 0.000& 9
10 0.000& 0.000& 0.000& 279.4 " 27.02 & 329.0 " 292.4 "1426 "1167 " 179.4 " 8.209& 0.000& 10
11 0.000& 0.000& 0.000& 242.2 " 28.16 & 299.8 " 256.4 "1396 "1089 " 196.4 " 6.297& 0.000& 11
12 0.000& 0.000& 0.000& 189.4 " 32.55 & 298.6 " 203.2 "1393 "1079 " 220.9 " 7.335& 0.000& 12
13 0.000& 0.000& 0.000& 187.1 " 39.65 & 295.9 " 182.8 " 996.2 " 837.5 " 192.2 " 7.975& 0.000& 13
14 0.000& 0.000& 0.000& 142.1 " 64.63 & 247.0 " 253.0 " 703.6 " 691.3 " 165.9 " 7.988& 0.000& 14
15 0.000& 0.000& 0.000& 118.6 " 97.02 " 207.9 " 360.4 " 714.4 " 641.7 " 133.6 " 5.941& 0.000& 15
16 0.000& 0.000& 0.000& 100.0 " 117.4 " 186.9 " 341.6 " 733.8 " 552.2 " 103.5 " 1.916& 0.000& 16
17 0.000& 0.000& 0.000& 88.59 & 101.8 & 165.4 " 311.1 "1426 " 479.6 " 84.82 & 1.029& 0.000& 17
18 0.000& 0.000& 0.000& 83.88 & 89.48 & 145.8 " 268.6 "1334 " 416.9 " 70.06 & 0.999& 0.000& 18
19 0.000& 0.000& 0.000& 74.01 & 85.94 & 131.0 " 220.5 " 814.0 " 373.0 " 59.49 & 0.831& 0.000& 19
20 0.000& 0.000& 0.000& 62.40 & 90.05 & 120.8 " 182.6 " 603.3 " 341.9 " 52.11 & 0.505& 0.000& 20
21 0.000& 0.000& 0.000& 58.10 & 98.80 " 114.6 " 166.6 " 528.3 " 315.2 " 48.58 & 0.319& 0.000& 21
22 0.000& 0.000& 0.000& 54.54 & 90.03 & 109.3 " 153.5 " 466.3 " 292.8 " 45.07 & 0.481& 0.000& 22
23 0.000& 0.000& 0.000& 51.19 & 83.74 & 109.5 " 139.2 " 409.3 " 277.9 " 42.53 & 0.290& 0.000& 23
24 0.000& 0.000& 0.000& 49.45 & 76.74 & 109.5 " 148.9 " 364.1 " 263.7 " 56.35 & 0.309& 0.000& 24
25 0.000& 0.000& 0.000& 47.83 & 72.26 & 107.8 " 236.7 " 332.5 " 246.7 " 57.69 & 0.871& 0.000& 25
26 0.000& 0.000& 0.000& 45.04 & 74.64 & 106.1 " 300.4 " 302.6 " 232.4 " 54.47 & 0.903& 0.000& 26
27 0.000& 0.000& 0.000& 40.89 & 75.14 & 103.6 " 334.5 " 280.8 " 223.0 " 38.78 & 0.855& 0.000& 27
28 0.000& 0.000& 0.000& 38.01 & 75.88 & 98.40 " 412.4 " 293.3 " 212.3 " 35.85 & 0.661& 0.000& 28
29 0.000& 0.000& 38.48 & 80.27 & 92.80 " 336.9 " 436.4 " 201.5 " 27.91 & 0.151& 0.000& 29
30 0.000& 752.4 & 41.32 & 84.21 & 87.31 & 297.1 " 588.2 " 190.4 " 25.78 & 0.028& 0.000& 30
31 0.000& 1119 " 89.25 & 265.3 " 758.8 " 29.63 & 0.000& 31
Mean 0.000& 0.000& 60.39 & 221.5 & 64.71 & 203.7 & 259.7 & 688.5 " 638.2 " 101.6 & 8.141& 0.000&
Median 0.000& 0.000& 0.000& 109.3 & 74.64 & 171.3 & 268.6 & 699.4 " 520.3 " 100.9 & 3.929& 0.000&
Maximum 0.000& 0.000&1119 &1116 & 117.4 & 403.4 & 412.4 &1426 "2318 " 220.9 & 30.20 & 0.001&
Minimum 0.000& 0.000& 0.000& 38.01 & 27.02 & 87.31 & 79.77 & 176.8 " 190.4 " 25.78 & 0.028& 0.000&
Total 0.00& 0.00& 1872 & 6646 & 2006 & 6112 & 8051 &21346 "19147 " 3152 & 244.2 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 187.8 & " ... Relative Uncertainty +/-10%
Ann. Median 57.69 & & ... Relative Uncertainty +/-30%
Annual Total 68580 &
Maximum Minimum
Daily 2318 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1998
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 458.3 " 240.3 "5408 " 314.3 " 12.89 & 0.003& 1
2 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 556.6 " 248.8 "4033 " 294.2 " 12.14 & 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 587.7 " 264.3 "4593 " 401.3 " 11.81 & 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 531.8 " 283.7 "5760 " 459.2 " 11.16 & 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 670.8 " 293.7 "3496 " 336.7 " 10.17 & 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 699.9 " 337.2 "2346 " 260.7 " 8.534& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 896.2 " 372.7 "1776 " 195.8 " 8.636& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000! 0.000!1129 " 462.8 "1419 " 149.1 " 7.659& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000! 0.000!1061 " 442.1 "1155 " 121.4 " 6.655& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000! 0.000! 801.6 " 359.4 " 968.8 " 101.8 " 6.637& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000! 576.4 ! 684.9 " 306.2 " 810.3 " 92.06 & 5.727& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000!1001 ! 631.8 " 282.3 " 691.5 " 85.89 & 4.851& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000! 826.1 ! 614.6 " 260.1 " 617.6 " 76.61 & 7.061& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000! 836.4 ! 584.1 " 242.1 " 574.8 " 71.59 & 5.109& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000! 943.0 ! 550.2 " 222.0 " 533.5 " 64.21 & 3.361& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000! 778.3 ! 457.3 " 203.5 " 502.7 " 57.56 & 3.406& 0.000& 16
17 0.000& 0.000& 0.000& 0.000! 0.000! 414.7 ! 359.4 " 192.7 " 468.3 " 57.78 & 2.854& 0.000& 17
18 0.000& 0.000& 0.000& 0.000! 0.000! 430.7 " 318.9 " 231.3 " 441.7 " 78.26 & 1.040& 0.000& 18
19 0.000& 0.000& 0.000& 0.000! 0.000! 480.3 " 328.9 " 275.7 " 393.5 " 67.58 & 1.365& 0.000& 19
20 0.000& 0.000& 0.000& 0.000! 0.000! 522.7 " 342.9 " 275.3 " 323.8 " 55.19 & 1.476& 0.000& 20
21 0.000& 0.000& 0.000& 0.000! 0.000! 461.5 " 383.3 " 312.3 " 313.1 " 50.56 & 2.123& 0.000& 21
22 0.000& 0.000& 0.000& 0.000! 0.000! 381.7 " 426.2 " 314.6 " 521.3 " 47.14 & 2.702& 0.000& 22
23 0.000& 0.000& 0.000& 0.000! 0.000! 389.8 " 437.7 " 253.3 " 546.3 " 44.31 & 2.017& 0.000& 23
24 0.000& 0.000& 0.000& 0.000! 0.000! 329.0 " 385.1 " 209.0 " 729.8 " 40.05 & 1.164& 0.000& 24
25 0.000& 0.000& 0.000& 0.000! 0.000! 270.8 " 358.2 " 195.9 " 649.1 " 34.83 & 1.158& 0.000& 25
26 0.000& 0.000& 0.000& 0.000! 0.000! 229.0 " 360.0 " 169.6 " 477.9 " 30.18 & 0.222& 0.000& 26
27 0.000& 0.000& 0.000& 0.000! 0.000! 231.8 " 381.8 " 178.5 " 388.0 " 25.32 & 0.025& 0.000& 27
28 0.000& 0.000& 0.000& 0.000! 0.000! 309.1 " 338.4 " 388.2 " 405.5 " 23.40 & 0.010& 0.000& 28
29 0.000& 0.000& 0.000! 0.000! 402.7 " 307.4 "1533 " 360.9 " 21.42 & 0.011& 0.000& 29
30 0.000& 0.000& 0.000! 0.000! 453.3 " 275.2 "5704 " 337.9 " 19.71 & 0.003& 0.000& 30
31 0.000& 0.000& 0.000! 247.9 "9603 " 15.55 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000! 0.000! 342.3 ! 521.6 " 795.5 "1368 " 119.1 & 4.733& 0.000&
Median 0.000& 0.000& 0.000& 0.000! 0.000! 355.3 ! 457.3 " 275.7 " 596.2 " 67.58 & 3.383& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000! 0.000!1001 !1129 "9603 "5760 " 459.2 & 12.89 & 0.003&
Minimum 0.000& 0.000& 0.000& 0.000! 0.000! 0.000! 247.9 " 169.6 " 313.1 " 15.55 & 0.003& 0.000&
Total 0.00& 0.00& 0.00& 0.00! 0.00!10269 !16169 "24660 "41047 " 3694 & 141.9 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 262.9 ! ! ... Not reviewed / Quality not known
Ann. Median 0.000! " ... Relative Uncertainty +/-10%
Annual Total 95984 ! & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 9603 ! 0.000!
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 1999
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.310& 0.000& 0.000& 0.000& 602.8 "1732 "1766 "1192 " 586.3 " 94.03 & 11.43 & 1
2 0.000& 0.038& 0.000& 0.000& 0.000& 469.7 "1606 "1543 "1046 " 541.2 " 91.12 & 9.924& 2
3 0.000& 0.007& 0.000& 0.000& 0.000& 343.7 "1512 "1339 "1084 " 479.5 " 87.07 & 9.056& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 285.4 "1463 "1070 "1506 " 392.4 " 88.93 & 9.212& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 233.2 "1678 " 715.6 "2166 " 361.7 " 89.14 & 8.774& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 194.6 "2786 " 594.4 "1764 " 341.6 " 82.34 & 5.794& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 161.8 "5643 " 610.9 "1159 " 392.9 " 77.29 & 3.713& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 137.9 "4380 " 599.4 " 940.0 "1021 " 84.63 & 1.348& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 124.1 "3217 " 655.3 " 830.7 "1569 " 80.51 & 0.251& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 116.4 "2363 " 596.0 " 756.4 "1730 " 76.83 & 0.015& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 127.0 "1953 " 925.3 " 999.3 "1241 " 70.00 & 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 156.2 "1755 "2604 "1554 " 864.3 " 64.80 & 2.512& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 135.2 "1704 "2878 "2351 " 692.5 " 58.10 & 10.49 & 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 134.9 "2063 "1562 "1749 " 693.6 " 40.63 & 6.390& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 233.4 "2578 "1128 "1584 " 887.8 " 36.73 & 2.617& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 525.4 "3728 "1081 "2498 "1907 " 43.40 & 0.742& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 977.3 "3097 "1338 "2400 "1397 " 41.82 & 0.164& 17
18 0.000& 0.000& 0.000& 0.000& 0.000&1539 "3000 "1697 "1425 " 814.1 " 148.1 & 0.020& 18
19 0.000& 0.000& 0.000& 0.000& 0.000&1764 "2171 "4011 "1036 " 609.7 " 239.8 " 0.004& 19
20 0.000& 0.000& 0.000& 0.000& 0.000&1709 "1550 "4040 " 845.3 " 496.9 " 153.7 " 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 14.76 &1578 "1206 "2681 " 781.6 " 406.5 " 108.2 " 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 12.43 &1357 " 982.1 "2016 " 945.1 " 340.9 " 78.77 & 0.000& 22
23 319.6 & 0.000& 0.000& 0.000& 36.39 &1675 " 825.4 "1599 "1155 " 284.1 " 62.31 & 0.000& 23
24 178.5 & 0.000& 0.000& 0.000& 35.66 &1878 " 746.0 "1408 "1412 " 220.8 " 51.21 & 0.000& 24
25 36.99 & 0.000& 0.000& 0.000& 29.51 &2168 " 942.8 "1452 "1034 " 173.7 " 40.02 & 0.000& 25
26 14.16 & 0.000& 0.000& 0.000& 38.70 &1886 "1046 "1705 " 797.3 " 149.7 " 33.02 & 0.000& 26
27 7.847& 0.000& 0.000& 0.000& 242.5 &1664 "1444 "2133 " 716.5 " 132.0 " 28.04 & 0.000& 27
28 5.241& 0.000& 0.000& 0.000& 944.9 "1686 "2221 "1682 " 706.3 " 118.1 " 22.31 & 0.000& 28
29 2.137& 0.000& 0.000&1274 "1754 "2227 "1304 " 672.3 " 108.9 " 19.06 & 0.000& 29
30 0.930& 0.000& 0.000&1196 "1841 "2236 "1134 " 622.5 " 103.2 " 11.91 & 170.5 & 30
31 0.920& 0.000& 857.7 " 2203 "1150 " 99.28 " 236.2 " 31
Mean 18.27 & 0.013& 0.000& 0.000& 151.1 & 915.5 "2131 "1581 "1257 " 618.0 " 73.47 & 15.78 &
Median 0.000& 0.000& 0.000& 0.000& 0.000& 564.1 "1953 "1408 "1065 " 479.5 " 73.42 & 0.251&
Maximum 319.6 & 0.310& 0.000& 0.000&1274 &2168 "5643 "4040 "2498 "1907 " 239.8 & 236.2 &
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 116.4 " 746.0 " 594.4 " 622.5 " 99.28 " 11.91 & 0.000&
Total 566.4 & 0.36& 0.00& 0.00& 4684 &27465 "66073 "49029 "37738 "19160 " 2204 & 489.2 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 568.2 & " ... Relative Uncertainty +/-10%
Ann. Median 43.40 & & ... Relative Uncertainty +/-30%
Annual Total 207413 &
Maximum Minimum
Daily 5643 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2000
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 614.2 " 8557 " 910.7 " 168.6 " 57.04& 37.23& 173.7 " 737.2 " 1272 " 123.8 " 16.43& 0.00& 1
2 407.4 " 8086 " 755.7 " 107.4 & 68.83& 35.13& 341.9 " 658.9 " 2047 " 113.7 " 14.75& 0.00& 2
3 218.4 " 7771 " 730.6 " 75.73& 76.97& 45.48& 580.1 " 816.8 " 1571 " 105.8 " 13.56& 0.00& 3
4 137.1 " 7871 " 730.9 " 53.52& 69.85& 158.2 & 1159 " 878.9 " 1015 " 99.98" 12.15& 0.00& 4
5 95.61& 7848 " 731.0 " 40.42& 64.31& 178.2 " 1392 " 992.2 " 846.7 " 93.20& 20.28& 0.00& 5
6 62.71& 7601 " 728.9 " 33.40& 58.83& 178.6 " 1065 " 1129 " 755.5 " 86.56& 14.55& 0.00& 6
7 54.48& 7172 " 691.0 " 29.68& 53.16& 178.7 " 1085 " 1266 " 844.1 " 81.33& 12.32& 0.00& 7
8 51.89& 6521 " 487.6 " 27.97& 49.15& 178.4 " 804.2 " 1656 " 1921 " 76.19& 12.65& 0.00& 8
9 101.6 & 5882 " 364.9 " 25.51& 47.40& 177.6 " 657.0 " 1251 " 1519 " 72.23& 12.72& 0.00& 9
10 95.84& 5245 " 383.3 " 24.78& 46.62& 183.0 " 608.1 " 958.9 " 937.2 " 67.23& 13.19& 0.00& 10
11 62.02& 4575 " 786.4 " 26.03& 47.62& 182.8 " 706.6 " 744.8 " 708.9 " 59.44& 10.37& 0.00& 11
12 44.00& 3987 " 860.9 " 25.21& 46.47& 182.6 " 749.4 " 641.1 " 576.5 " 54.99& 5.13& 0.00& 12
13 29.49& 3470 " 795.0 " 26.42& 49.43& 180.3 " 858.6 " 570.6 " 504.2 " 53.74& 5.02& 0.00& 13
14 32.79& 2979 " 621.2 " 27.66& 56.45& 216.9 " 1113 " 515.1 " 458.4 " 52.62& 6.39& 0.00& 14
15 795.9 & 2567 " 303.6 " 29.26& 75.63& 260.3 " 1205 " 506.6 " 416.7 " 50.74& 8.23& 0.00& 15
16 358.8 " 2256 " 170.4 " 30.47& 77.66& 366.1 " 1474 " 644.3 " 406.8 " 48.74& 8.21& 0.00& 16
17 175.0 " 1998 " 106.5 " 30.96& 71.08& 308.9 " 1832 " 826.8 " 390.5 " 42.75& 6.19& 0.00& 17
18 299.8 " 1752 " 75.27& 31.04& 66.34& 230.8 " 2381 " 938.7 " 368.3 " 40.82& 3.69& 0.00& 18
19 228.7 " 1587 " 57.13& 31.04& 63.25& 207.4 " 4357 " 922.3 " 326.3 " 39.14& 2.28& 0.00& 19
20 182.6 " 1471 " 47.61& 31.04& 59.41& 227.7 " 3285 " 677.9 " 285.8 " 35.12& 1.95& 0.00& 20
21 168.5 " 1427 " 44.06& 31.04& 56.47& 228.7 " 2068 " 556.8 " 259.7 " 31.76& 1.66& 0.00& 21
22 1046 " 1286 " 38.76& 31.04& 55.02& 245.3 " 1820 " 482.9 " 238.6 " 32.09& 1.24& 0.00& 22
23 11190 " 876.7 " 37.97& 31.04& 51.39& 227.8 " 1545 " 429.2 " 219.9 " 32.24& 1.17& 0.00& 23
24 11712 " 500.3 " 36.45& 31.04& 39.26& 231.5 " 1390 " 407.9 " 205.8 " 29.18& 0.32& 0.00& 24
25 8561 " 306.5 " 39.58& 31.04& 38.94& 226.8 " 1359 " 390.5 " 188.7 " 25.69& 0.03& 0.00& 25
26 9994 " 220.0 " 364.4 & 31.04& 37.77& 192.9 " 1040 " 465.1 " 171.8 " 22.75& 0.00& 0.00& 26
27 12575 " 179.3 " 873.8 " 32.54& 36.85& 200.6 " 845.7 " 532.8 " 158.6 " 22.65& 0.00& 0.00& 27
28 13966 " 167.0 " 957.2 " 46.27& 46.65& 191.2 " 740.4 " 534.3 " 148.1 " 24.74& 0.00& 0.00& 28
29 12574 " 905.3 " 793.4 " 45.13& 35.17& 172.4 " 707.0 " 599.0 " 139.8 " 20.09& 0.00& 0.00& 29
30 10783 " 417.2 " 50.40& 43.78& 153.3 " 691.6 " 599.9 " 132.2 " 14.33& 0.00& 0.00& 30
31 9507 " 251.3 " 41.09& 785.2 " 705.1 " 15.16& 0.00& 31
Mean 3423 &3623 " 457.8 & 41.22 & 54.44 & 192.8 &1252 " 743.2 " 634.5 " 53.83 & 6.816& 0.000&
Median 228.7 &2567 " 417.2 & 31.03 & 53.16 & 187.1 &1065 " 658.9 " 411.7 " 48.74 & 5.658& 0.000&
Maximum 13966 & 8557 " 957.2 & 168.6 & 77.66& 366.1 & 4357 " 1656 " 2047 " 123.8 & 20.28& 0.00&
Minimum 29.48 & 167.0 " 36.45 & 24.77 & 35.17 & 35.12 & 173.7 " 390.5 " 132.2 " 14.33 & 0.000& 0.000&
Total 106129 &105074 " 14193 & 1236 & 1687 & 5786 & 38828 " 23039 " 19037 " 1669 & 204.5& 0.0&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 865.8 & " ... Relative Uncertainty +/-10%
Ann. Median 168.5 & & ... Relative Uncertainty +/-30%
Annual Total 316888 &
Maximum Minimum
Daily 13966 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2001
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 15.64 &2461 " 199.5 " 288.5 " 14.32 & 0.819& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 4.814& 13.45 &1597 " 202.2 " 259.2 " 12.42 & 0.906& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 46.08 & 14.70 & 841.7 " 192.0 " 199.5 " 9.517& 1.198& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 33.07 & 13.46 & 635.0 " 170.2 " 146.6 " 6.791& 1.038& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 29.58 & 16.39 & 559.0 " 153.2 " 105.8 & 6.670& 0.862& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 27.58 & 20.04 & 480.7 " 142.4 " 78.26 & 6.838& 0.347& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 28.35 & 34.70 & 407.5 " 136.2 " 63.87 & 5.372& 0.153& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 28.54 & 34.91 & 341.1 " 144.5 " 52.54 & 3.692& 0.056& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 27.24 & 63.68 & 333.8 " 169.9 " 43.86 & 3.325& 0.001& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 23.53 & 82.50 & 435.2 " 201.2 " 37.59 & 2.741& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 24.15 & 155.6 " 555.3 " 212.0 " 33.55 & 2.095& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 27.32 & 139.3 " 665.5 " 201.9 " 28.81 & 1.721& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 27.88 & 108.2 " 468.9 " 180.2 " 26.13 & 1.285& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 28.66 & 82.44 & 431.4 " 152.2 " 23.18 & 1.389& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 28.81 & 71.63 & 676.3 " 127.4 " 17.29 & 1.536& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 27.34 & 61.39 &1525 " 110.6 " 17.98 & 1.095& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 22.85 & 53.91 &2389 " 97.98 " 17.29 & 0.430& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 20.57 & 49.41 &1332 " 87.27 & 16.15 & 0.414& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 21.45 & 45.41 & 858.4 " 76.33 & 17.39 & 6.391& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 22.10 & 42.42 & 668.9 " 68.64 & 17.41 & 5.246& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 19.83 & 40.36 & 542.0 " 62.20 & 20.19 & 4.464& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 19.81 & 37.85 & 453.7 " 67.61 & 19.86 & 3.605& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 17.32 & 35.55 & 377.9 " 57.49 & 30.73 & 6.464& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 15.77 & 34.00 & 336.2 " 83.03 & 30.52 & 5.379& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 17.12 & 32.21 & 344.9 " 94.82 & 42.25 & 4.963& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 19.06 & 30.72 & 414.3 " 96.36 " 41.67 & 5.554& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 17.95 & 31.47 & 465.9 " 80.83 & 39.88 & 5.219& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 15.74 & 31.99 & 339.6 " 75.65 & 34.15 & 3.672& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 16.36 & 47.27 & 265.8 " 95.22 & 25.87 & 2.998& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 15.68 & 230.6 & 237.5 " 249.1 " 20.28 & 1.534& 0.000& 30
31 0.000& 0.000& 0.000& 959.3 " 215.2 " 16.90 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 22.49 & 84.86 & 698.6 " 132.9 & 58.50 & 4.571& 0.174&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 22.48 & 40.36 & 468.9 " 131.8 & 30.73 & 4.078& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 46.08 & 959.3 &2461 " 249.1 & 288.5 & 14.32 & 1.198&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 13.45 & 215.2 " 57.49 & 16.15 & 0.414& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 674.6 & 2630 &21659 " 3989 & 1813 & 137.1 & 5.38&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 84.68 & " ... Relative Uncertainty +/-10%
Ann. Median 0.906& & ... Relative Uncertainty +/-30%
Annual Total 30910 &
Maximum Minimum
Daily 2461 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2002
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 6.092& 92.21 & 152.8 " 139.9 " 19.14 & 9.541& 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 6.203& 113.5 " 132.3 " 215.7 " 17.86 & 6.605& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 7.753& 159.3 " 115.3 " 203.4 " 16.11 & 8.182& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 11.51 & 160.6 " 116.9 " 335.3 " 14.32 & 7.968& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 37.32 & 155.6 " 138.8 " 398.2 " 16.02 & 6.153& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 32.63 & 136.8 " 156.2 " 264.7 " 16.22 & 4.490& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 59.48 & 117.0 " 215.0 " 197.6 " 37.94 & 2.673& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 94.83 & 120.1 " 290.0 " 150.0 " 33.81 & 2.813& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 75.73 & 126.6 " 259.8 " 120.1 " 25.08 & 2.321& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 55.47 & 120.7 " 287.4 " 100.6 " 54.83 & 2.548& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 42.02 & 147.5 " 317.8 " 84.73 & 69.56 & 1.554& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 38.24 & 238.7 " 359.8 " 73.65 & 52.20 & 0.322& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 37.63 & 367.0 " 373.3 " 65.19 & 39.95 & 0.126& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 40.00 & 396.3 " 296.7 " 65.10 & 30.76 & 0.024& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 50.74 & 424.5 " 209.3 " 78.19 & 24.24 & 0.001& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 44.54 & 335.7 " 166.2 " 113.8 " 19.37 & 0.000& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 41.09 & 258.0 " 144.2 " 85.90 & 18.11 & 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 4.907& 46.15 & 227.4 " 126.7 " 94.04 & 17.27 & 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 12.65 & 58.60 & 199.1 " 111.0 " 133.6 " 20.83 & 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 13.10 & 72.50 & 190.1 " 101.1 " 108.8 " 18.58 & 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 11.08 & 59.26 & 191.6 " 92.75 " 79.82 & 13.80 & 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 11.89 & 73.46 & 321.4 " 85.26 & 63.48 & 13.94 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 11.43 & 100.6 & 241.0 " 79.26 & 53.42 & 14.72 & 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 8.144& 99.78 " 190.5 " 75.01 & 47.95 & 15.34 & 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 9.180& 93.09 & 201.8 " 72.05 & 43.95 & 18.61 & 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 8.968& 99.12 " 220.9 " 74.74 & 40.36 & 13.85 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 8.340& 83.41 & 253.0 " 77.29 & 36.60 & 11.57 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 8.083& 67.95 & 300.2 " 93.32 & 32.96 & 10.16 & 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 7.281& 73.65 & 254.2 " 92.04 & 29.40 & 8.092& 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 8.418& 89.03 & 208.9 " 114.1 " 26.17 & 7.066& 0.000& 0.000& 30
31 0.000& 0.000& 6.802& 185.2 " 138.9 " 6.388& 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 4.203& 56.60 & 214.7 & 163.4 & 116.1 & 22.44 & 1.844& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 57.04 & 199.1 & 132.3 & 85.32 & 17.86 & 0.001& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 13.10 & 100.6 & 424.5 & 373.3 & 398.2 & 69.56 & 9.541& 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 6.092& 92.21 & 72.05 & 26.17 & 6.388& 0.000& 0.000&
Total 0.000& 0.000& 0.000& 0.000& 130.2 &1698 &6656 &5066 &3483 & 695.8 & 55.32 & 0.000&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 48.73 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 17786 &
Maximum Minimum
Daily 424.5 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2003
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 12.01 & 33.09 &1636 " 342.6 " 609.7 " 229.0 " 8.049& 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 11.06 & 33.93 &1086 " 364.5 " 568.5 " 178.6 " 7.711& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 10.22 & 36.39 & 771.0 " 680.3 " 481.1 " 159.2 " 7.166& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 10.06 & 39.56 & 836.3 "1377 " 368.7 " 138.1 " 5.901& 0.000& 4
5 0.000& 0.000& 0.000& 7.732& 9.815& 37.48 & 990.9 "1814 " 317.8 " 123.0 " 7.081& 0.000& 5
6 0.000& 0.000& 0.000& 77.64 & 8.182& 33.57 &1312 "1425 " 280.6 " 107.2 " 7.363& 0.000& 6
7 0.000& 0.000& 0.000& 52.86 & 6.977& 32.37 &1245 " 847.4 " 257.6 " 94.23 & 6.497& 0.000& 7
8 0.000& 0.000& 0.000& 31.16 & 14.43 & 31.05 &1119 " 654.7 " 242.2 " 82.41 & 5.746& 0.000& 8
9 0.000& 0.000& 0.000& 21.42 & 58.19 & 31.35 & 799.0 " 563.2 " 239.4 " 70.76 & 3.280& 0.000& 9
10 0.000& 0.000& 0.000& 46.68 & 94.56 & 29.89 & 897.8 " 513.4 " 242.6 " 62.60 & 2.650& 0.000& 10
11 0.000& 0.000& 0.000& 79.87 & 70.92 & 26.93 &1261 " 789.5 " 307.2 " 56.67 & 2.078& 0.000& 11
12 0.000& 0.000& 0.000& 54.26 & 34.96 & 24.39 &1607 "1349 " 340.8 " 52.39 & 1.180& 0.000& 12
13 0.000& 0.000& 0.000& 45.73 & 22.19 & 22.73 &2204 "2119 " 414.4 " 47.95 & 0.861& 0.000& 13
14 0.000& 0.000& 0.000& 41.24 & 20.92 & 21.77 &1464 "1605 " 439.9 " 45.35 & 0.255& 0.000& 14
15 0.000& 0.000& 0.000& 115.1 & 61.02 & 20.72 &1235 "1125 " 351.0 " 44.43 & 0.017& 0.000& 15
16 0.000& 0.000& 0.000& 106.6 " 89.78 & 19.22 &1099 " 970.4 " 290.1 " 40.39 & 0.116& 0.000& 16
17 0.000& 0.000& 0.000& 87.31 & 223.3 " 17.90 &1013 " 889.3 " 243.7 " 35.51 & 4.802& 0.000& 17
18 0.000& 0.000& 0.000& 83.56 & 142.3 " 17.02 & 807.8 " 815.7 " 209.9 " 32.22 & 4.479& 0.000& 18
19 0.000& 0.000& 0.000& 68.06 & 109.1 " 16.40 & 671.9 " 818.9 " 184.7 " 30.44 & 5.392& 0.000& 19
20 0.000& 0.000& 0.000& 54.80 & 94.16 & 17.63 & 598.0 " 901.0 " 162.7 " 27.72 & 3.916& 0.000& 20
21 0.000& 0.000& 0.000& 50.19 & 90.27 & 17.56 & 543.3 " 890.0 " 164.2 " 24.92 & 3.632& 0.000& 21
22 0.000& 0.000& 0.000& 45.00 & 97.13 & 30.46 & 502.2 "1464 " 226.9 " 21.44 & 2.681& 0.000& 22
23 0.000& 0.000& 0.000& 36.30 & 121.0 " 30.42 & 464.7 "1835 " 298.1 " 19.83 & 1.815& 0.000& 23
24 0.000& 0.000& 0.000& 32.58 & 88.32 & 39.04 & 429.3 "2162 " 385.1 " 17.53 & 0.985& 0.000& 24
25 0.000& 0.000& 0.000& 29.69 & 70.21 & 62.93 & 396.3 "1636 " 482.0 " 15.65 & 0.612& 0.000& 25
26 0.000& 0.000& 0.000& 23.42 & 62.43 & 76.49 & 350.9 "1161 " 479.1 " 12.51 & 0.194& 0.000& 26
27 0.000& 0.000& 0.000& 18.85 & 56.40 & 268.2 " 317.2 " 988.0 " 345.7 " 15.33 & 0.053& 0.000& 27
28 0.000& 0.000& 0.000& 16.96 & 52.90 & 736.4 " 301.7 " 857.0 " 259.1 " 25.65 & 0.001& 0.000& 28
29 0.000& 0.000& 15.03 & 46.27 &1380 " 283.1 " 769.7 " 221.5 " 18.25 & 0.000& 0.000& 29
30 0.000& 0.000& 12.97 & 42.00 &1796 " 289.6 " 700.3 " 283.4 " 10.82 & 0.000& 0.000& 30
31 0.000& 0.000& 37.43 & 352.8 " 648.3 " 8.954& 0.000& 31
Mean 0.000& 0.000& 0.000& 41.83 & 60.28 & 166.0 & 867.4 "1067 " 323.3 " 59.66 & 3.150& 0.000&
Median 0.000& 0.000& 0.000& 38.77 & 56.40 & 31.20 & 807.8 " 890.0 " 294.1 " 40.39 & 2.666& 0.000&
Maximum 0.000& 0.000& 0.000& 115.1 & 223.3 &1796 &2204 "2162 " 609.7 " 229.0 & 8.049& 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 6.977& 16.40 & 283.1 " 342.6 " 162.7 " 8.954& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 1255 & 1868 & 4982 &26890 "33083 " 9699 " 1849 & 94.51& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 218.4 & " ... Relative Uncertainty +/-10%
Ann. Median 20.72 & & ... Relative Uncertainty +/-30%
Annual Total 79724 &
Maximum Minimum
Daily 2204 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2004
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 81.79 & 143.5 " 495.6 " 38.10 & 12.52 & 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 82.65 & 221.4 " 394.8 " 35.18 & 9.933& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 103.5 & 291.1 " 330.0 " 32.68 & 7.652& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 122.7 " 304.3 " 286.8 " 30.18 & 6.909& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 111.9 " 288.0 " 270.8 " 26.94 & 5.985& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 126.1 " 263.7 " 412.5 " 25.70 & 4.646& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 5.341& 204.0 " 290.9 " 580.8 " 21.58 & 4.321& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 174.2 " 625.0 " 255.6 " 495.8 " 21.76 & 3.541& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 114.3 & 560.6 " 225.3 " 410.5 " 16.74 & 2.220& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 69.66 & 546.7 " 195.0 " 344.6 " 14.08 & 2.655& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 178.5 & 505.7 " 170.8 " 280.8 " 14.54 & 2.260& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 419.7 " 367.7 " 268.2 " 236.4 " 14.31 & 1.777& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 291.1 " 288.1 " 441.2 " 200.9 " 22.86 & 1.291& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 221.1 " 247.4 " 491.0 " 177.4 " 22.45 & 1.270& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 204.7 " 208.9 " 647.8 " 160.3 " 16.71 & 0.960& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 205.6 " 170.9 " 498.7 " 146.2 " 16.09 & 0.664& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 154.8 " 141.4 " 350.0 " 155.8 " 14.41 & 0.375& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 114.5 " 123.7 " 286.9 " 136.7 " 12.00 & 0.002& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 93.68 & 110.8 " 264.0 " 118.7 " 10.26 & 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 77.27 & 105.9 " 230.5 " 105.2 " 8.780& 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 67.63 & 113.2 " 216.6 " 93.60 & 17.82 & 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 62.39 & 145.7 " 223.1 " 83.59 & 34.36 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 68.33 & 150.8 " 245.1 " 73.96 & 96.16 & 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 77.35 & 141.3 " 445.3 " 65.74 & 62.05 & 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 75.17 & 159.3 " 531.2 " 59.82 & 76.26 & 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 66.52 & 160.5 " 562.6 " 57.50 & 46.77 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 70.23 & 141.5 " 680.8 " 53.36 & 30.76 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 77.72 & 123.0 "1040 " 48.73 & 24.85 & 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 0.000& 93.41 & 107.6 " 992.1 " 44.41 & 20.34 & 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 83.14 & 103.7 " 899.9 " 40.63 & 18.43 & 0.000& 0.000& 30
31 0.000& 0.000& 0.000& 104.6 " 676.7 " 15.59 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 102.2 & 202.8 & 407.8 " 212.0 & 27.70 & 2.299& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 77.31 & 141.4 & 290.9 " 158.1 & 21.76 & 0.812& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 419.7 & 625.0 &1040 " 580.8 & 96.16 & 12.52 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 81.79 & 143.5 " 40.63 & 8.780& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 3066 & 6288 &12643 " 6362 & 858.9 & 68.98& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 80.02 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 29289 &
Maximum Minimum
Daily 1040 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2005
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 5.365& 316.6 "1176 " 295.8 " 413.8 " 174.6 " 25.64 & 0.000& 1
2 0.000& 0.000& 0.000& 130.5 & 11.53 & 270.0 "1066 " 293.9 " 355.2 " 212.9 " 22.49 & 0.000& 2
3 0.000& 0.000& 0.000& 505.8 " 11.98 & 237.0 " 946.7 " 369.0 " 307.1 " 223.0 " 20.09 & 0.000& 3
4 0.000& 0.000& 0.000& 602.1 " 317.6 & 335.6 " 900.9 " 379.6 " 274.4 " 231.9 " 17.14 & 0.000& 4
5 0.000& 0.000& 0.000& 429.1 " 473.3 " 613.1 "1279 " 406.8 " 255.8 " 230.2 " 18.49 & 0.000& 5
6 0.000& 0.000& 0.000& 246.0 " 366.0 " 617.2 "1713 " 408.2 " 324.2 " 197.2 " 15.43 & 0.000& 6
7 0.000& 0.000& 0.000& 142.3 " 229.7 " 572.5 "1338 " 342.9 " 498.4 " 182.3 " 15.07 & 0.000& 7
8 0.000& 0.000& 0.000& 92.67 & 147.0 "1002 "1000 " 294.7 " 903.7 " 239.2 " 13.58 & 0.000& 8
9 0.000& 0.000& 0.000& 66.95 & 101.9 "1882 " 864.2 " 268.7 "1005 " 327.6 " 11.79 & 0.000& 9
10 0.000& 0.000& 0.000& 50.79 & 77.59 &2669 " 724.7 " 249.6 " 748.8 " 281.9 " 11.18 & 0.000& 10
11 0.000& 0.000& 0.000& 38.78 & 63.83 &3205 " 627.1 " 234.7 " 652.3 " 201.3 " 10.71 & 0.000& 11
12 0.000& 0.000& 0.000& 29.50 & 66.05 &2982 " 565.4 " 225.2 " 573.3 " 154.9 " 9.297& 0.000& 12
13 0.000& 0.000& 0.000& 22.59 & 77.59 &2418 " 531.4 " 273.6 " 440.2 " 125.0 " 8.082& 0.000& 13
14 0.000& 0.000& 0.000& 17.76 & 78.47 &2037 " 539.2 " 379.5 " 362.4 " 105.0 " 6.748& 0.000& 14
15 0.000& 0.000& 0.000& 14.80 & 58.01 &1638 " 522.3 " 507.6 " 328.0 " 90.50 & 6.202& 0.000& 15
16 0.000& 0.000& 0.000& 11.94 & 101.0 &1295 " 537.2 " 612.4 " 293.5 " 84.81 & 5.444& 0.000& 16
17 0.000& 0.000& 0.000& 10.03 & 221.6 "1714 " 546.9 " 761.1 " 305.3 " 76.87 & 3.755& 0.000& 17
18 0.000& 0.000& 0.000& 9.242& 316.5 "1948 " 523.1 "1491 " 486.5 " 80.93 & 3.307& 0.000& 18
19 0.000& 0.000& 0.000& 8.164& 542.6 "2190 " 489.0 "2102 " 593.2 " 64.76 & 2.726& 0.000& 19
20 0.000& 0.000& 0.000& 7.992& 985.6 "2000 " 459.4 "2184 " 719.2 " 55.12 & 2.507& 0.000& 20
21 0.000& 0.000& 0.000& 6.133&1979 "1675 " 538.1 "1375 " 543.0 " 50.86 & 1.150& 0.000& 21
22 0.000& 0.000& 0.000& 4.762&1879 "1410 " 636.7 " 966.8 " 408.9 " 50.00 & 0.743& 0.000& 22
23 0.000& 0.000& 0.000& 4.416&2009 "1301 " 657.2 " 818.6 " 354.7 " 53.78 & 0.309& 0.000& 23
24 0.000& 0.000& 0.000& 3.470&2086 "2645 " 651.9 " 680.2 " 321.1 " 46.05 & 0.160& 0.000& 24
25 0.000& 0.000& 0.000& 4.380&1800 "3682 " 539.0 " 609.4 " 272.7 " 41.15 & 0.022& 0.000& 25
26 0.000& 0.000& 0.000& 4.129&1804 "3419 " 478.0 " 558.8 " 236.2 " 42.03 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 3.460&1199 "2578 " 444.0 " 512.6 " 198.2 " 42.88 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 2.145& 800.7 "2102 " 410.7 " 489.8 " 175.9 " 40.45 & 0.000& 0.000& 28
29 0.000& 0.000& 1.390& 603.5 "1562 " 378.2 " 479.4 " 162.2 " 36.61 & 0.000& 0.000& 29
30 0.000& 0.000& 3.728& 483.6 "1286 " 347.9 " 451.3 " 162.9 " 32.11 & 0.000& 0.000& 30
31 0.000& 0.000& 386.6 " 319.7 " 427.3 " 28.46 & 0.000& 31
Mean 0.000& 0.000& 0.000& 82.51 & 622.1 &1720 " 701.7 " 627.4 " 422.5 " 122.7 & 7.737& 0.000&
Median 0.000& 0.000& 0.000& 10.99 & 317.6 &1695 " 546.9 " 451.3 " 354.9 " 84.81 & 5.823& 0.000&
Maximum 0.000& 0.000& 0.000& 602.1 &2086 &3682 "1713 "2184 "1005 " 327.6 & 25.64 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 5.365& 237.0 " 319.7 " 225.2 " 162.2 " 28.46 & 0.000& 0.000&
Total 0.00& 0.00& 0.00& 2475 &19287 &51613 "21755 "19452 "12677 " 3805 & 232.1 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 359.7 & " ... Relative Uncertainty +/-10%
Ann. Median 46.05 & & ... Relative Uncertainty +/-30%
Annual Total 131299 &
Maximum Minimum
Daily 3682 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2006
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 439.2 " 9.752& 0.000& 7.571& 20.87 & 62.44 & 106.8 " 285.2 " 98.43 & 15.87 & 0.000& 1
2 0.000& 418.2 " 8.916& 0.000& 9.752& 20.29 & 79.16 & 102.8 " 324.5 " 67.05 & 12.73 & 0.000& 2
3 0.000& 375.5 " 7.773& 0.000& 11.37 & 21.25 & 65.35 & 95.69 " 412.6 " 59.71 & 10.42 & 0.000& 3
4 0.000& 290.4 " 7.601& 0.000& 11.03 & 22.27 & 58.85 & 86.48 & 435.1 " 53.75 & 9.078& 0.000& 4
5 0.000& 203.0 " 6.579& 0.000& 9.155& 22.76 & 52.94 & 79.12 & 355.6 " 51.94 & 10.26 & 0.000& 5
6 0.000& 163.0 " 4.328& 0.000& 9.358& 21.20 & 51.66 & 71.96 & 284.9 " 45.27 & 9.144& 0.000& 6
7 0.000& 174.1 " 3.915& 0.000& 9.779& 17.90 & 50.07 & 72.29 & 239.3 " 38.21 & 8.573& 0.000& 7
8 0.000& 185.6 " 3.443& 0.000& 10.72 & 17.49 & 44.66 & 114.2 & 237.8 " 38.72 & 5.725& 0.000& 8
9 483.6 & 223.7 " 2.517& 0.001& 10.34 & 17.21 & 42.58 & 143.4 " 293.3 " 36.95 & 3.531& 0.000& 9
10 600.8 " 146.8 " 1.923& 1.785& 10.85 & 17.85 & 39.86 & 128.9 " 308.5 " 34.93 & 1.930& 0.000& 10
11 190.9 " 102.9 & 0.991& 6.030& 11.00 & 18.16 & 38.94 & 113.9 " 315.2 " 31.60 & 1.480& 0.000& 11
12 172.1 " 81.03 & 0.567& 6.636& 11.04 & 17.77 & 38.26 & 95.10 " 337.8 " 27.15 & 0.748& 0.000& 12
13 792.3 " 65.99 & 0.434& 6.190& 10.95 & 20.82 & 35.77 & 90.83 & 378.1 " 24.72 & 0.229& 0.000& 13
14 2052 " 68.30 & 0.524& 5.252& 10.14 & 22.45 & 33.37 & 86.58 & 397.3 " 21.88 & 0.036& 0.000& 14
15 1543 " 60.48 & 0.195& 6.358& 11.85 & 21.10 & 32.01 & 93.17 & 369.9 " 21.23 & 0.005& 0.000& 15
16 1030 " 51.60 & 0.067& 6.776& 12.68 & 20.15 & 34.69 & 147.4 " 309.0 " 19.00 & 0.000& 0.000& 16
17 1727 " 44.40 & 0.017& 5.605& 16.24 & 20.56 & 34.65 & 225.4 " 258.3 " 17.72 & 0.000& 0.000& 17
18 1695 " 38.51 & 0.002& 6.467& 15.18 & 21.95 & 32.66 & 298.4 " 246.6 " 17.92 & 0.000& 0.000& 18
19 998.4 " 31.79 & 0.000& 6.321& 11.56 & 24.59 & 32.39 & 269.1 " 249.2 " 18.87 & 0.000& 0.000& 19
20 693.2 " 26.40 & 0.000& 6.632& 11.34 & 16.93 & 31.39 & 399.4 " 232.0 " 18.50 & 0.000& 0.000& 20
21 562.1 " 26.93 & 0.000& 6.504& 12.71 & 16.17 & 28.86 & 521.9 " 211.4 " 18.56 & 0.000& 0.000& 21
22 505.8 " 29.14 & 0.000& 6.235& 17.60 & 20.27 & 60.91 & 535.1 " 195.9 " 20.23 & 0.000& 0.000& 22
23 599.8 " 29.46 & 0.000& 4.353& 19.94 & 25.10 & 91.28 & 679.4 " 177.8 " 19.67 & 0.000& 0.000& 23
24 630.4 " 20.74 & 0.000& 4.138& 17.44 & 24.44 & 84.43 & 917.7 " 157.9 " 18.94 & 0.000& 0.000& 24
25 655.8 " 16.87 & 0.000& 4.660& 17.58 & 29.69 & 117.4 " 855.5 " 132.1 " 18.98 & 0.000& 0.000& 25
26 648.2 " 12.59 & 0.000& 4.361& 18.54 & 29.07 & 159.8 " 680.1 " 120.0 " 20.85 & 0.000& 0.000& 26
27 631.0 " 11.47 & 0.000& 4.884& 16.82 & 32.35 & 155.5 " 513.2 " 110.1 " 19.28 & 0.000& 0.000& 27
28 587.5 " 9.755& 0.000& 7.016& 15.79 & 30.11 & 186.0 " 412.5 " 100.3 " 19.04 & 0.000& 0.000& 28
29 467.5 " 0.000& 7.790& 17.37 & 38.18 & 191.0 " 333.9 " 90.95 & 21.03 & 0.000& 0.000& 29
30 456.6 " 0.000& 7.774& 17.56 & 55.89 & 147.0 " 279.2 " 87.28 & 17.86 & 0.000& 0.000& 30
31 450.1 " 0.000& 18.63 & 126.0 " 257.4 " 16.71 & 0.000& 31
Mean 586.3 & 119.5 & 1.921& 4.059& 13.29 & 23.50 & 72.26 & 284.1 & 255.1 & 30.80 & 2.992& 0.000&
Median 562.1 & 63.23 & 0.067& 5.068& 11.56 & 21.15 & 51.66 & 147.4 & 253.8 & 21.03 & 0.003& 0.000&
Maximum 2052 & 439.2 & 9.752& 7.790& 19.94 & 55.89 & 191.0 & 917.7 & 435.1 & 98.43 & 15.87 & 0.000&
Minimum 0.000& 9.755& 0.000& 0.000& 7.571& 16.17 & 28.86 & 71.96 & 87.28 & 16.71 & 0.000& 0.000&
Total 18175 & 3348 & 59.54& 121.7 & 411.9 & 704.9 & 2240 & 8807 & 7655 & 954.8 & 89.77& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 116.6 & " ... Relative Uncertainty +/-10%
Ann. Median 19.04 & & ... Relative Uncertainty +/-30%
Annual Total 42570 &
Maximum Minimum
Daily 2052 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2007
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 41.91 & 111.6 "1762 " 592.2 " 109.9 " 8.975& 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 123.1 " 182.9 "2457 " 598.1 " 91.17 & 7.552& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 82.87 & 294.6 "1750 " 448.5 " 78.42 & 6.757& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 63.44 & 546.3 "1323 " 357.0 " 66.60 & 6.090& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 47.25 & 722.0 " 949.2 " 314.5 " 57.64 & 5.428& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 37.46 & 667.6 " 733.2 " 286.0 " 48.76 & 5.043& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 33.31 & 440.6 " 738.6 " 267.1 " 43.61 & 3.644& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 28.74 & 310.2 " 717.1 " 292.4 " 57.49 & 3.521& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 26.12 & 246.2 "1019 " 302.3 " 135.2 & 2.270& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 23.56 & 201.1 " 789.0 " 359.6 " 168.1 " 1.732& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 23.37 & 170.2 " 824.3 " 396.4 " 200.4 " 1.334& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 22.31 & 150.3 " 846.9 " 402.9 " 222.4 " 1.036& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 21.15 & 139.9 "1058 " 539.6 " 173.3 " 0.883& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 23.11 & 121.2 " 764.5 " 582.8 " 121.0 " 0.448& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 22.54 & 95.15 & 557.2 " 850.2 " 90.07 & 0.109& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 19.24 & 77.19 & 462.2 " 685.3 " 72.66 & 0.007& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 16.43 & 69.42 & 397.7 " 555.2 " 60.21 & 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 142.7 & 63.35 & 340.2 " 453.3 " 49.64 & 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 104.4 & 66.96 & 317.0 " 353.2 " 40.34 & 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 69.44 & 75.33 & 532.1 " 290.3 " 31.63 & 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 51.97 & 146.1 " 764.6 " 246.8 " 26.63 & 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 50.69 & 225.9 " 872.2 " 204.8 " 21.99 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 51.15 & 421.1 "1142 " 177.1 " 17.90 & 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 40.83 & 586.6 " 918.8 " 156.4 " 15.63 & 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 58.18 & 825.5 " 957.4 " 158.2 " 13.82 & 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 61.09 &1012 " 777.0 " 154.2 " 12.68 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 164.7 &1208 " 622.5 " 154.2 " 13.37 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 153.1 "1374 " 524.5 " 193.3 " 11.75 & 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 107.7 "1238 " 520.0 " 169.1 " 14.15 & 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 99.10 "1275 " 617.3 " 134.4 " 12.13 & 0.000& 0.000& 30
31 0.000& 0.000& 0.000& 1689 " 547.1 " 10.33 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 60.37 & 476.0 & 858.2 " 355.8 " 67.40 & 1.828& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 48.97 & 246.2 & 764.6 " 308.4 " 49.64 & 0.058& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 164.7 &1689 &2457 " 850.2 " 222.4 & 8.975& 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 16.43 & 63.35 & 317.0 " 134.4 " 10.33 & 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 1811 &14756 &26606 "10676 " 2089 & 54.83& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 153.4 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 55995 &
Maximum Minimum
Daily 2457 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2008
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 45.33 & 73.13 & 527.5 "9098 " 247.2 " 277.7 " 144.9 " 39.03 & 1
2 0.000& 0.000& 0.000& 0.000& 47.96 & 78.35 & 445.7 "5536 " 219.3 " 241.1 " 138.8 " 39.40 & 2
3 0.000& 0.000& 0.000& 25.23 & 41.55 & 84.39 & 373.5 "3800 " 206.9 " 206.9 " 131.2 " 36.70 & 3
4 0.000& 0.000& 0.000& 19.33 & 31.26 & 176.7 & 310.9 "2980 " 191.4 " 178.3 " 120.3 " 31.04 & 4
5 0.000& 0.000& 0.000& 34.26 & 25.36 & 216.8 " 247.6 "2171 " 179.8 " 153.9 " 112.8 " 28.67 & 5
6 0.000& 0.000& 0.000& 47.01 & 22.82 & 143.6 " 208.1 "1551 " 172.4 " 134.4 " 110.5 " 19.81 & 6
7 0.000& 0.000& 0.000& 85.00 & 18.24 & 101.0 " 179.8 "1235 " 177.3 " 121.2 " 105.2 " 21.40 & 7
8 0.000& 0.000& 0.000& 241.5 & 14.79 & 77.18 & 151.4 "1028 " 170.6 " 110.2 " 95.43 & 15.81 & 8
9 0.000& 0.000& 0.000& 193.4 " 14.50 & 77.87 & 136.0 " 881.4 " 158.4 " 101.4 " 70.94 & 9.162& 9
10 0.000& 0.000& 0.000& 101.9 & 12.29 & 66.58 & 124.6 " 768.2 " 141.0 " 95.34 " 56.61 & 12.12 & 10
11 0.000& 0.000& 0.000& 57.39 & 9.619& 70.52 & 131.5 " 675.5 " 123.7 " 88.36 & 46.80 & 26.34 & 11
12 0.000& 0.000& 0.000& 37.03 & 8.781& 69.97 & 135.7 " 603.9 " 115.6 " 82.71 & 38.97 & 11.92 & 12
13 0.000& 0.000& 0.000& 24.09 & 8.241& 61.95 & 134.5 " 545.9 " 111.3 " 79.64 & 33.03 & 6.595& 13
14 0.000& 0.000& 0.000& 15.82 & 7.286& 66.22 & 143.2 " 497.8 " 109.5 " 75.93 & 27.36 & 3.406& 14
15 0.000& 0.000& 0.000& 11.85 & 7.518& 76.26 & 169.1 " 449.8 " 113.1 " 72.42 & 20.75 & 1.937& 15
16 0.000& 0.000& 0.000& 10.51 & 7.206& 79.39 & 249.1 " 404.5 " 108.5 " 66.39 & 16.99 & 0.479& 16
17 0.000& 0.000& 0.000& 25.13 & 7.606& 101.6 " 395.1 " 366.3 " 108.3 " 64.82 & 14.87 & 0.046& 17
18 0.000& 0.000& 0.000& 25.44 & 8.004& 94.01 " 703.3 " 334.0 " 114.6 " 63.01 & 14.79 & 0.000& 18
19 0.000& 0.000& 0.000& 67.64 & 10.57 & 99.47 "1377 " 306.9 " 121.1 " 60.74 & 14.44 & 0.000& 19
20 0.000& 0.000& 0.000& 57.95 & 13.21 & 126.0 "1679 " 290.0 " 108.3 " 61.39 & 13.09 & 0.000& 20
21 0.000& 0.000& 0.000& 91.50 & 13.48 & 111.6 "2174 " 273.9 " 96.94 & 59.55 & 12.64 & 0.000& 21
22 0.000& 0.000& 0.000& 73.39 & 16.61 & 89.05 &1402 " 261.2 " 91.07 & 57.31 & 12.85 & 0.000& 22
23 0.000& 0.000& 0.000& 57.13 & 14.50 & 74.28 & 983.4 " 253.5 " 95.11 & 55.25 & 19.62 & 0.000& 23
24 0.000& 0.000& 0.000& 45.14 & 20.34 & 62.87 & 908.4 " 238.1 " 89.73 & 69.34 & 16.90 & 0.000& 24
25 0.000& 0.000& 0.000& 36.15 & 39.20 & 55.72 & 995.8 " 224.5 " 163.6 & 90.40 & 16.86 & 0.000& 25
26 0.000& 0.000& 0.000& 29.41 & 126.6 " 55.60 &1852 " 213.4 " 356.9 " 117.7 " 20.62 & 0.000& 26
27 0.000& 0.000& 0.000& 25.10 & 96.93 & 68.36 &1590 " 209.0 " 383.4 " 108.0 " 21.28 & 0.000& 27
28 0.000& 0.000& 0.000& 24.14 & 82.71 & 69.12 &1534 " 207.4 " 490.4 " 78.79 & 52.19 & 0.000& 28
29 0.000& 0.000& 0.000& 27.79 & 74.38 & 164.3 &1904 " 266.7 " 495.5 "1454 & 45.86 & 0.000& 29
30 0.000& 0.000& 37.03 & 69.55 & 363.0 "2649 " 282.6 " 350.8 " 432.1 " 39.90 & 0.000& 30
31 0.000& 0.000& 67.51 & 5260 " 287.1 " 195.2 " 0.000& 31
Mean 0.000& 0.000& 0.000& 50.91 & 31.74 & 101.8 & 938.1 "1169 " 187.0 & 163.0 & 52.89 & 9.804&
Median 0.000& 0.000& 0.000& 35.20 & 16.61 & 78.11 & 445.7 " 404.5 " 149.7 & 90.40 & 36.00 & 0.479&
Maximum 0.000& 0.000& 0.000& 241.5 & 126.6 & 363.0 &5260 "9098 " 495.5 &1454 & 144.9 & 39.40 &
Minimum 0.000& 0.000& 0.000& 0.000& 7.206& 55.60 & 124.6 " 207.4 " 89.73 & 55.25 & 12.64 & 0.000&
Total 0.00& 0.00& 0.00& 1527 & 984.1 & 3055 &29081 "36246 " 5612 & 5055 & 1586 & 303.9 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 228.0 & " ... Relative Uncertainty +/-10%
Ann. Median 46.33 & & ... Relative Uncertainty +/-30%
Annual Total 83453 &
Maximum Minimum
Daily 9098 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2009
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 312.1 " 0.000& 0.000& 0.000& 0.000& 622.1 " 699.2 " 610.0 " 245.1 " 34.52 & 4.992& 1
2 0.000& 186.8 " 0.000& 0.000& 0.000& 0.000& 667.2 " 643.0 " 567.3 " 230.8 " 32.70 & 2.071& 2
3 0.000& 100.2 & 88.80 & 0.000& 0.000& 0.000& 644.4 " 602.0 " 548.1 " 225.0 " 31.12 & 0.965& 3
4 0.000& 59.57 & 103.7 & 0.000& 0.000& 0.000& 459.0 " 563.5 " 516.1 " 205.8 " 28.34 & 0.453& 4
5 0.000& 38.39 & 30.51 & 0.000& 0.000& 0.000& 326.1 " 527.9 " 485.0 " 172.5 " 24.38 & 0.117& 5
6 0.000& 23.11 & 13.19 & 0.000& 0.000& 0.000& 297.7 " 511.3 " 469.1 " 144.9 " 20.34 & 0.010& 6
7 0.000& 13.50 & 19.21 & 0.000& 0.000& 0.000& 354.2 " 508.9 " 428.5 " 125.4 " 15.82 & 0.000& 7
8 0.000& 9.130& 16.31 & 0.000& 0.000& 0.000& 348.7 " 492.8 " 422.5 " 111.3 " 13.76 & 0.000& 8
9 0.000& 6.678& 10.83 & 0.000& 0.000& 0.000& 341.8 " 566.3 " 422.4 " 101.1 " 14.64 & 0.000& 9
10 0.000& 4.768& 7.459& 0.000& 0.000& 0.000& 570.4 " 578.2 " 444.3 " 91.99 & 22.42 & 0.000& 10
11 0.000& 3.796& 6.064& 0.000& 0.000& 0.000& 852.9 " 547.2 " 517.4 " 83.39 & 9.887& 0.000& 11
12 0.000& 2.697& 5.010& 0.000& 0.000& 0.000& 942.3 " 549.6 " 746.3 " 75.34 & 17.32 & 0.000& 12
13 0.000& 1.047& 3.150& 0.000& 0.000& 0.000& 896.5 " 547.5 " 691.0 " 70.02 & 19.37 & 0.000& 13
14 0.000& 0.467& 1.979& 0.000& 0.000& 0.000& 649.6 " 571.7 " 996.4 " 63.63 & 11.54 & 0.000& 14
15 0.000& 0.373& 1.661& 0.000& 0.000& 0.000& 485.5 " 833.9 " 943.9 " 57.56 & 7.596& 0.000& 15
16 0.000& 0.386& 1.260& 0.000& 0.000& 0.000& 389.6 "1580 " 691.1 " 51.68 & 7.740& 0.000& 16
17 0.000& 0.076& 0.710& 0.000& 0.000& 0.000& 358.8 "3528 " 556.8 " 46.86 & 10.28 & 0.000& 17
18 0.000& 0.005& 0.277& 0.000& 0.000& 0.000& 334.0 "2532 " 517.2 " 42.57 & 12.88 & 0.000& 18
19 0.000& 0.000& 0.039& 0.000& 0.000& 4.235& 476.8 "1877 " 488.2 " 38.97 & 10.72 & 0.000& 19
20 0.000& 0.000& 0.007& 0.000& 0.000& 12.52 &1426 "1816 " 407.3 " 35.63 & 7.525& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 16.81 &3033 "2065 " 401.4 " 32.23 & 19.08 & 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 32.30 &5070 "1845 " 433.8 " 29.72 & 16.40 & 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 43.00 &5127 "1721 " 445.4 " 25.10 & 12.03 & 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 57.40 &3167 "1360 " 542.4 " 23.15 & 9.170& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 136.7 &2360 "1099 " 540.6 " 23.12 & 7.238& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 268.5 "1979 " 957.3 " 406.7 " 33.49 & 3.334& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 189.4 "1481 " 814.6 " 328.8 " 34.25 & 2.090& 0.000& 27
28 245.6 & 0.000& 0.000& 0.000& 0.000& 203.8 "1222 " 732.4 " 281.5 " 38.77 & 3.859& 0.000& 28
29 1347 " 0.000& 0.000& 0.000& 255.3 " 995.8 " 813.0 " 252.9 " 36.53 & 6.852& 0.000& 29
30 1167 " 0.000& 0.000& 0.000& 554.4 " 854.5 " 786.9 " 246.1 " 40.53 & 5.917& 0.000& 30
31 552.4 " 0.000& 0.000& 766.2 " 692.0 " 36.50 & 0.000& 31
Mean 106.8 & 27.26 & 10.00 & 0.000& 0.000& 59.16 &1209 "1063 " 511.6 " 83.01 & 14.63 & 0.278&
Median 0.000& 0.426& 0.277& 0.000& 0.000& 0.000& 667.2 " 732.4 " 486.6 " 51.68 & 12.45 & 0.000&
Maximum 1347 & 312.1 & 103.7 & 0.000& 0.000& 554.4 &5127 "3528 " 996.4 " 245.1 & 34.52 & 4.992&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 297.7 " 492.8 " 246.1 " 23.12 & 2.090& 0.000&
Total 3312 & 763.2 & 310.2 & 0.00& 0.00& 1774 &37503 "32967 "15350 " 2573 & 438.9 & 8.61&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 260.2 & " ... Relative Uncertainty +/-10%
Ann. Median 5.917& & ... Relative Uncertainty +/-30%
Annual Total 95002 &
Maximum Minimum
Daily 5127 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2010
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 90.09 & 1.780& 41.84 & 44.98 & 71.98 & 32.38 & 4.256& 0.000& 0.000& 1
2 0.000& 0.000& 0.000& 67.10 & 1.412& 40.34 & 39.34 & 78.52 & 30.33 & 3.771& 0.000& 0.000& 2
3 0.000& 0.000& 0.000& 53.22 & 1.312& 39.49 & 35.69 & 83.16 & 29.00 & 3.433& 0.000& 0.000& 3
4 0.000& 0.000& 0.000& 41.74 & 1.027& 36.53 & 32.23 & 74.45 & 27.36 & 3.261& 0.000& 0.000& 4
5 0.000& 0.000& 0.000& 34.22 & 1.085& 32.85 & 29.85 & 63.48 & 27.09 & 3.230& 0.000& 0.000& 5
6 0.000& 0.000& 0.000& 28.93 & 1.170& 29.37 & 28.80 & 56.71 & 26.61 & 1.793& 0.000& 0.000& 6
7 0.000& 0.000& 0.000& 22.82 & 1.046& 25.77 & 27.63 & 49.72 & 25.23 & 2.210& 0.000& 0.000& 7
8 0.000& 0.000& 0.000& 18.61 & 1.045& 21.00 & 29.17 & 44.72 & 24.30 & 2.902& 0.000& 0.000& 8
9 0.000& 0.000& 0.000& 14.87 & 1.146& 18.66 & 53.64 & 41.94 & 25.10 & 2.729& 0.000& 0.000& 9
10 0.000& 0.000& 0.000& 12.26 & 0.692& 16.74 & 69.90 & 38.97 & 25.23 & 2.018& 0.000& 0.000& 10
11 0.000& 0.000& 0.000& 10.89 & 0.468& 15.73 & 138.0 " 37.56 & 24.50 & 1.067& 0.000& 0.000& 11
12 0.000& 0.000& 0.000& 9.177& 0.451& 14.62 & 153.6 " 60.11 & 21.76 & 1.178& 0.000& 0.000& 12
13 0.000& 0.000& 0.000& 8.324& 11.65 & 14.01 & 393.7 " 92.03 & 22.52 & 1.925& 0.000& 0.000& 13
14 0.000& 0.000& 0.000& 7.820& 4.956& 14.76 & 411.7 " 137.5 " 28.77 & 0.625& 0.000& 0.000& 14
15 0.000& 0.000& 0.000& 6.886& 3.959& 26.97 & 586.5 " 111.8 " 30.75 & 0.252& 0.000& 0.000& 15
16 0.000& 0.000& 0.000& 6.113& 9.179& 20.95 & 498.8 " 178.1 " 26.33 & 0.243& 0.000& 0.000& 16
17 0.000& 0.000& 0.000& 5.980& 7.948& 23.05 & 319.1 " 193.7 " 20.71 & 0.260& 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 6.851& 8.182& 41.99 & 230.2 " 139.6 " 17.25 & 0.147& 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 6.319& 12.50 & 58.62 & 185.7 " 105.6 " 15.06 & 0.092& 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 4.005& 15.20 & 93.36 & 164.5 " 85.16 & 13.04 & 0.035& 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 3.871& 29.39 & 86.55 & 146.1 " 72.25 & 11.67 & 0.003& 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 3.434& 36.73 & 68.96 & 125.9 " 65.51 & 10.61 & 0.000& 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 2.758& 16.57 & 63.47 & 106.9 " 58.74 & 9.631& 0.000& 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 2.956& 15.21 & 53.26 & 93.06 " 54.36 & 8.439& 0.000& 0.000& 0.000& 24
25 0.000& 0.000& 156.7 & 3.634& 17.00 & 54.28 & 82.70 & 49.85 & 8.103& 0.000& 0.000& 0.000& 25
26 0.000& 0.000& 798.0 " 2.321& 19.81 & 54.02 & 74.35 & 45.24 & 7.907& 0.000& 0.000& 0.000& 26
27 0.000& 0.000& 528.2 " 2.350& 68.48 & 53.81 & 67.84 & 42.39 & 7.678& 0.000& 0.000& 0.000& 27
28 0.000& 0.000& 487.7 " 2.575& 72.08 & 53.79 & 63.95 & 40.21 & 6.642& 0.000& 0.000& 0.000& 28
29 0.000& 357.9 " 2.719& 53.92 & 54.10 & 67.14 & 36.36 & 6.280& 0.000& 0.000& 0.000& 29
30 0.000& 222.0 " 2.058& 48.55 & 50.86 & 75.43 & 32.53 & 4.779& 0.000& 0.000& 0.000& 30
31 0.000& 140.4 " 45.15 & 79.65 & 35.70 & 0.000& 0.000& 31
Mean 0.000& 0.000& 86.81 & 16.16 & 16.42 & 40.66 & 143.7 & 73.49 & 19.17 & 1.143& 0.000& 0.000&
Median 0.000& 0.000& 0.000& 6.869& 8.182& 39.92 & 79.65 & 60.11 & 22.14 & 0.252& 0.000& 0.000&
Maximum 0.000& 0.000& 798.0 & 90.09 & 72.08 & 93.36 & 586.5 & 193.7 & 32.38 & 4.256& 0.000& 0.000&
Minimum 0.000& 0.000& 0.000& 2.058& 0.451& 14.01 & 27.63 & 32.53 & 4.779& 0.000& 0.000& 0.000&
Total 0.000& 0.000&2691 & 484.9 & 509.1 &1219 &4456 &2278 & 575.1 & 35.43 & 0.000& 0.000&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 33.56 & " ... Relative Uncertainty +/-10%
Ann. Median 2.350& & ... Relative Uncertainty +/-30%
Annual Total 12251 &
Maximum Minimum
Daily 798.0 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2011
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 151.3 "2071 " 261.8 " 136.9 " 160.6 " 0.655& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 303.3 "3223 " 269.3 " 132.4 " 122.1 " 0.327& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 354.1 "2903 " 378.0 " 115.4 " 98.94 " 0.104& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 364.2 "2389 " 352.6 " 108.9 " 139.1 " 0.020& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 278.3 "2261 " 409.8 " 221.5 " 402.3 " 0.002& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 189.9 "1659 " 459.0 " 402.5 " 390.4 " 6.563& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 145.2 "1209 " 337.3 " 242.4 " 332.1 " 16.07 & 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 113.4 " 947.6 " 265.9 " 161.3 " 229.2 " 12.55 & 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 0.441& 91.85 & 781.9 " 220.2 " 124.7 " 188.9 " 21.13 & 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 14.93 & 78.72 & 679.9 " 187.2 " 121.1 " 174.5 " 28.45 & 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 15.32 & 104.4 & 593.1 " 160.9 " 149.6 " 149.7 " 46.25 & 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 12.85 & 184.3 " 536.2 " 137.3 " 178.9 " 137.5 " 83.82 & 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 10.46 & 308.0 " 481.5 " 122.6 " 126.9 " 122.1 " 59.13 & 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 11.36 & 290.2 " 447.9 " 110.1 " 92.57 & 115.3 " 38.48 & 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 10.36 & 321.0 " 462.9 " 101.6 " 78.77 & 109.3 " 50.60 & 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 8.954& 504.2 " 567.0 " 95.56 " 64.84 & 104.0 " 156.5 " 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 8.582& 662.6 " 806.7 " 101.2 " 54.25 & 99.18 " 158.7 " 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 7.900& 552.6 " 735.1 " 151.4 " 53.83 & 93.96 & 150.3 " 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 6.797& 444.8 " 723.6 " 294.2 " 47.47 & 86.71 & 121.3 " 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 7.139& 404.7 " 541.3 " 290.2 " 45.42 & 75.00 & 105.7 " 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 7.918& 337.2 " 420.2 " 313.8 " 42.26 & 57.36 & 84.37 & 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 7.687& 385.5 " 390.8 " 338.3 " 40.77 & 42.20 & 67.09 & 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 7.590& 365.3 " 531.6 " 300.1 " 38.62 & 28.07 & 51.64 & 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 9.556& 332.5 " 877.7 " 248.8 " 37.80 & 18.80 & 38.79 & 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 13.49 & 312.5 "1408 " 220.4 " 58.35 & 15.42 & 28.20 & 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 14.51 & 294.3 " 806.8 " 215.5 " 132.6 & 8.932& 20.34 & 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 17.47 & 295.0 " 565.9 " 179.5 " 175.9 " 5.949& 16.69 & 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 42.30 & 278.5 " 453.7 " 170.8 " 203.7 " 5.562& 13.81 & 28
29 0.000& 0.000& 0.000& 0.000& 54.68 & 624.1 " 369.8 " 163.5 " 197.7 " 2.806& 12.25 & 29
30 0.000& 0.000& 0.000& 0.000& 159.2 &1001 " 319.5 " 148.6 " 231.9 " 1.171& 10.66 & 30
31 0.000& 0.000& 0.000& 1505 " 284.8 " 208.9 " 8.792& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 14.98 & 373.5 & 982.3 " 233.5 " 129.9 & 117.2 & 45.47 &
Median 0.000& 0.000& 0.000& 0.000& 0.000& 8.250& 312.5 & 679.9 " 220.3 " 124.7 & 101.6 & 28.20 &
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 159.2 &1505 &3223 " 459.0 " 402.5 & 402.3 & 158.7 &
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 78.72 & 284.8 " 95.56 " 37.80 & 1.171& 0.002&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 449.6 &11580 &30454 " 7006 " 4029 & 3517 & 1409 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 160.1 & " ... Relative Uncertainty +/-10%
Ann. Median 10.46 & & ... Relative Uncertainty +/-30%
Annual Total 58447 &
Maximum Minimum
Daily 3223 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2012
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 9.569& 2.899& 0.000& 0.000& 0.000& 0.000& 101.7 " 35.56 & 41.66 & 47.65 & 0.120& 0.026& 1
2 49.07 & 1.349& 0.000& 0.000& 0.000& 0.000& 90.33 " 33.79 & 38.10 & 51.84 & 0.293& 0.008& 2
3 43.88 & 21.72 & 0.000& 0.000& 0.000& 0.000& 85.67 & 45.78 & 38.91 & 59.15 & 0.207& 0.001& 3
4 129.8 " 1.588& 0.000& 0.000& 0.000& 0.000& 79.45 & 52.56 & 56.08 & 51.31 & 1.349& 0.000& 4
5 63.86 & 0.708& 0.000& 0.000& 0.000& 0.000& 71.72 & 65.09 & 184.2 & 40.72 & 5.204& 0.000& 5
6 35.47 & 0.841& 0.000& 0.000& 0.000& 0.000& 63.64 & 66.79 & 195.6 " 31.49 & 1.606& 0.000& 6
7 26.06 & 1.308& 0.000& 0.000& 0.000& 0.000& 60.01 & 71.41 & 238.8 " 23.99 & 1.331& 0.000& 7
8 19.38 & 0.741& 0.000& 0.000& 0.000& 0.000& 54.48 & 79.14 & 394.4 " 19.72 & 1.053& 0.000& 8
9 16.45 & 0.355& 0.000& 0.000& 0.000& 8.795& 50.53 & 83.69 & 307.8 " 16.65 & 0.942& 0.000& 9
10 14.09 & 0.285& 0.000& 0.000& 0.000& 72.73 & 54.60 & 78.16 & 214.2 " 13.42 & 0.658& 0.000& 10
11 11.89 & 0.138& 0.000& 0.000& 0.000& 42.13 & 54.65 & 101.3 & 158.7 " 11.33 & 0.137& 0.000& 11
12 10.55 & 0.012& 0.000& 0.000& 0.000& 57.78 & 67.50 & 116.7 " 120.4 " 9.864& 0.008& 0.397& 12
13 7.711& 0.000& 0.000& 0.000& 0.000& 102.8 & 62.17 & 99.94 " 96.49 & 8.503& 0.000& 2.989& 13
14 6.295& 0.000& 0.000& 0.000& 0.000& 212.4 " 55.38 & 146.8 " 79.56 & 7.377& 0.000& 3.558& 14
15 6.315& 0.000& 0.000& 0.000& 0.000& 182.6 " 55.68 & 185.4 " 66.50 & 6.259& 0.015& 1.799& 15
16 2.532& 0.000& 0.000& 0.000& 0.000& 223.5 " 53.28 & 176.3 " 56.83 & 5.689& 1.094& 1.508& 16
17 0.789& 0.000& 0.000& 0.000& 0.000& 220.6 " 50.84 & 182.7 " 46.37 & 5.685& 4.523& 0.998& 17
18 0.342& 0.000& 0.000& 0.000& 0.000& 191.4 " 50.69 & 147.9 " 43.16 & 4.504& 6.654& 0.343& 18
19 0.160& 0.000& 0.000& 0.000& 0.000& 163.5 " 53.49 & 117.7 " 37.04 & 3.729& 3.976& 0.017& 19
20 0.070& 0.000& 0.000& 0.000& 0.000& 301.2 " 47.88 & 99.52 " 32.67 & 3.213& 1.223& 0.000& 20
21 60.02 & 0.000& 0.000& 0.000& 0.000& 289.0 " 46.32 & 84.37 & 30.55 & 3.471& 0.458& 0.000& 21
22 22.13 & 0.000& 0.000& 0.000& 0.000& 217.5 " 45.22 & 74.28 & 25.98 & 2.647& 10.49 & 0.000& 22
23 6.656& 0.000& 0.000& 0.000& 0.000& 213.8 " 43.16 & 76.80 & 25.05 & 2.125& 40.86 & 0.000& 23
24 2.088& 0.000& 0.000& 0.000& 0.000& 238.8 " 40.94 & 69.53 & 23.26 & 1.240& 42.78 & 0.000& 24
25 0.690& 0.000& 0.000& 0.000& 0.000& 203.4 " 38.54 & 65.09 & 23.18 & 1.309& 10.50 & 0.000& 25
26 0.107& 0.000& 0.000& 0.000& 0.000& 178.1 " 37.79 & 59.54 & 23.12 & 1.218& 5.809& 0.000& 26
27 7.666& 0.000& 0.000& 0.000& 0.000& 160.2 " 35.98 & 55.31 & 30.04 & 1.176& 3.187& 0.000& 27
28 19.83 & 0.000& 0.000& 0.000& 0.000& 141.2 " 33.95 & 56.64 & 47.35 & 1.212& 2.525& 0.000& 28
29 9.777& 0.000& 0.000& 0.000& 0.000& 127.7 " 31.49 & 51.65 & 56.30 & 1.046& 2.241& 0.000& 29
30 5.410& 0.000& 0.000& 0.000& 115.5 " 29.60 & 49.94 & 50.61 & 0.683& 0.344& 0.000& 30
31 4.309& 0.000& 0.000& 37.07 & 45.74 & 0.194& 0.000& 31
Mean 19.13 & 1.102& 0.000& 0.000& 0.000& 122.1 & 54.32 & 86.31 & 92.77 & 14.14 & 4.987& 0.376&
Median 9.569& 0.000& 0.000& 0.000& 0.000& 134.5 & 53.28 & 74.28 & 48.98 & 5.689& 1.277& 0.000&
Maximum 129.8 & 21.72 & 0.000& 0.000& 0.000& 301.2 & 101.7 & 185.4 & 394.4 & 59.15 & 42.78 & 3.558&
Minimum 0.070& 0.000& 0.000& 0.000& 0.000& 0.000& 29.60 & 33.79 & 23.12 & 0.194& 0.000& 0.000&
Total 593.0 & 31.95 & 0.000& 0.000& 0.000&3665 &1683 &2675 &2783 & 438.4 & 149.6 & 11.64 &
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 32.87 & " ... Relative Uncertainty +/-10%
Ann. Median 1.349& & ... Relative Uncertainty +/-30%
Annual Total 12033 &
Maximum Minimum
Daily 394.4 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2013
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 2.299& 0.197& 37.36 & 15.35 & 505.3 " 448.2 " 298.4 " 18.67 & 0.000& 1
2 0.000& 0.000& 0.000& 11.93 & 0.365& 39.94 & 13.75 & 451.1 " 355.6 " 254.9 " 15.32 & 0.000& 2
3 0.000& 0.000& 0.000& 17.77 & 0.297& 27.87 & 13.30 & 381.5 " 359.9 " 245.9 " 12.58 & 0.000& 3
4 0.000& 0.000& 0.000& 32.93 & 0.223& 35.39 & 12.59 & 301.9 " 324.7 " 257.6 " 11.50 & 0.000& 4
5 0.000& 0.000& 0.000& 27.65 & 0.136& 31.35 & 13.33 & 247.9 " 300.9 " 214.0 " 9.365& 0.000& 5
6 0.000& 0.000& 0.000& 18.98 & 0.109& 23.16 & 14.57 & 219.2 " 241.7 " 169.6 " 8.479& 0.000& 6
7 0.000& 0.000& 0.000& 13.85 & 0.067& 27.56 & 15.26 & 252.4 " 278.0 " 145.6 " 8.030& 0.000& 7
8 17.05 & 0.000& 0.000& 13.60 & 4.759& 24.28 & 13.20 & 411.0 " 490.4 " 123.9 " 7.246& 0.000& 8
9 14.83 & 0.000& 0.000& 10.31 & 12.10 & 21.84 & 13.56 & 837.6 " 407.1 " 125.4 " 6.595& 0.000& 9
10 4.592& 0.000& 0.000& 9.202& 7.925& 19.64 & 15.77 &1176 " 434.8 " 135.7 " 5.105& 0.000& 10
11 1.415& 0.000& 0.000& 7.016& 10.02 & 18.46 & 15.22 &1526 " 565.7 " 147.2 " 4.365& 0.000& 11
12 0.437& 0.000& 0.000& 5.020& 13.46 & 18.52 & 25.20 &1149 " 725.6 " 123.4 " 3.504& 0.000& 12
13 0.112& 0.000& 0.000& 5.916& 19.21 & 19.98 & 60.77 & 987.7 " 682.0 " 125.4 " 1.958& 0.000& 13
14 3.215& 0.000& 0.000& 6.789& 41.13 & 18.34 & 157.9 " 859.8 " 893.5 " 106.6 " 0.857& 0.000& 14
15 1.751& 0.000& 0.000& 5.493& 35.00 & 17.92 & 140.0 " 665.1 "1080 " 91.07 & 0.300& 0.000& 15
16 0.478& 0.000& 0.000& 4.134& 32.60 & 19.33 & 257.6 " 545.9 "1005 " 77.90 & 0.107& 0.000& 16
17 0.038& 0.000& 0.000& 4.544& 26.75 & 22.09 & 318.0 " 487.9 "1679 " 66.84 & 0.064& 0.000& 17
18 0.000& 0.000& 0.000& 4.629& 22.46 & 21.18 & 494.5 " 414.5 "1243 " 59.04 & 0.017& 0.000& 18
19 0.000& 0.000& 0.000& 5.235& 20.55 & 24.47 & 472.1 " 391.9 "1044 " 52.96 & 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 3.215& 25.46 & 20.46 & 452.8 " 362.6 "1096 " 53.76 & 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 1.422& 19.00 & 25.82 & 363.6 " 302.2 " 812.7 " 49.77 & 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 1.536& 18.20 & 24.79 & 298.5 " 260.1 " 652.6 " 48.72 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 1.384& 18.48 & 20.52 & 271.7 " 223.0 " 729.3 " 41.66 & 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 1.169& 21.10 & 18.37 & 224.1 " 193.1 " 792.3 " 37.52 & 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 1.135& 19.46 & 15.40 & 170.2 " 171.2 " 927.6 " 33.54 & 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 1.240& 18.36 & 13.58 & 161.4 " 160.0 "1206 " 33.65 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.773& 16.42 & 14.79 & 228.7 " 165.7 " 828.7 " 32.59 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.535& 14.53 & 17.36 & 457.9 " 184.7 " 578.5 " 30.95 & 0.000& 0.000& 28
29 0.000& 0.000& 0.296& 16.58 & 18.03 & 477.4 " 205.6 " 433.7 " 28.65 & 0.000& 0.000& 29
30 0.000& 0.000& 0.236& 18.32 & 17.58 & 821.1 " 205.2 " 352.6 " 25.60 & 0.000& 0.000& 30
31 0.000& 0.000& 15.26 & 662.1 " 306.9 " 22.09 & 0.000& 31
Mean 1.417& 0.000& 0.000& 7.342& 15.11 & 22.51 & 215.2 & 469.5 " 699.1 " 105.1 & 3.802& 0.000&
Median 0.000& 0.000& 0.000& 4.825& 16.58 & 20.49 & 161.4 & 362.6 " 667.3 " 77.90 & 0.204& 0.000&
Maximum 17.05 & 0.000& 0.000& 32.93 & 41.13 & 39.94 & 821.1 &1526 "1679 " 298.4 & 18.67 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.236& 0.067& 13.58 & 12.59 & 160.0 " 241.7 " 22.09 & 0.000& 0.000&
Total 43.93& 0.00& 0.00& 220.2 & 468.6 & 675.5 & 6672 &14555 "20973 " 3260 & 114.0 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 128.7 & " ... Relative Uncertainty +/-10%
Ann. Median 12.59 & & ... Relative Uncertainty +/-30%
Annual Total 46984 &
Maximum Minimum
Daily 1679 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2014
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 5.643& 208.5 " 81.23 & 476.2 " 600.9 " 95.97 & 26.03 & 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 17.94 & 185.0 " 92.00 & 411.2 " 888.3 " 92.31 & 21.21 & 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 14.30 & 165.5 " 161.2 " 346.1 " 671.0 " 88.77 & 15.34 & 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 11.18 & 125.1 " 191.6 " 293.2 " 510.0 " 80.64 & 13.08 & 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 10.09 & 94.25 & 150.9 " 253.2 " 420.7 " 70.72 & 11.81 & 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 8.813& 77.91 & 191.1 " 223.4 " 348.2 " 60.36 & 9.697& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 15.82 & 65.02 & 249.0 " 201.1 " 294.7 " 52.22 & 8.326& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 25.04 & 56.44 & 392.2 " 188.0 " 311.0 " 48.37 & 6.709& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 47.29 & 50.20 & 509.7 " 192.1 " 420.2 " 43.76 & 5.352& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 104.1 & 48.62 & 633.5 " 187.9 " 391.6 " 42.09 & 5.383& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 37.39 & 43.63 & 625.0 " 211.1 " 473.2 " 39.74 & 4.219& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 19.14 & 54.48 & 468.9 " 233.4 " 545.4 " 39.72 & 2.827& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 12.75 & 57.22 & 348.6 " 200.0 " 429.6 " 35.70 & 1.722& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 9.718& 45.14 & 317.1 " 168.4 " 309.6 " 30.63 & 0.908& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 7.442& 43.27 & 408.0 " 144.2 " 248.0 " 26.81 & 0.703& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 6.229& 40.33 & 382.5 " 127.2 " 210.1 " 21.91 & 0.689& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 5.613& 46.33 & 373.2 " 116.3 " 180.5 " 18.37 & 0.418& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 10.82 & 70.10 & 383.6 " 132.0 " 155.7 " 18.02 & 0.160& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 11.38 & 174.9 & 318.4 " 219.8 " 125.9 " 87.17 & 0.050& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 10.27 & 212.3 " 281.8 " 292.5 " 99.99 & 87.36 & 0.007& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 10.13 & 183.8 " 347.2 " 262.9 " 96.88 & 92.20 & 0.001& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 9.015& 270.0 " 520.8 " 290.9 " 91.30 & 66.77 & 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 33.47 & 302.5 " 888.6 " 299.3 " 113.6 " 44.02 & 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 49.06 & 226.8 " 799.2 " 243.7 " 130.2 " 44.07 & 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 182.7 " 197.8 " 803.1 " 214.2 " 137.1 " 39.69 & 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 104.5 " 199.9 " 663.0 " 204.3 " 178.7 " 31.69 & 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 156.5 " 166.2 " 603.9 " 181.6 " 161.8 " 40.93 & 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 236.0 " 130.3 " 578.7 " 154.6 " 122.6 " 54.71 & 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 265.3 " 105.9 " 640.9 " 135.3 " 105.3 " 47.90 & 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 253.8 " 90.69 & 713.1 " 265.5 " 94.86 & 38.47 & 0.000& 0.000& 30
31 0.000& 0.000& 228.0 " 564.2 " 484.2 " 30.60 & 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 61.93 & 124.6 & 441.4 & 237.2 " 295.6 & 51.99 & 4.489& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 15.82 & 100.0 & 392.2 & 214.2 " 229.1 & 44.02 & 0.696& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 265.3 & 302.5 & 888.6 & 484.2 " 888.3 & 95.97 & 26.03 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 5.613& 40.33 & 81.23 & 116.3 " 91.30 & 18.02 & 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 1919 & 3738 &13683 & 7355 " 8868 & 1611 & 134.6 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 102.2 & " ... Relative Uncertainty +/-10%
Ann. Median 9.718& & ... Relative Uncertainty +/-30%
Annual Total 37313 &
Maximum Minimum
Daily 888.6 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2015
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 25.23 & 247.9 " 109.2 " 8.860& 0.072& 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 24.28 & 768.5 " 98.96 & 8.054& 0.153& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 20.74 & 758.1 " 92.71 & 7.310& 0.050& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 15.89 & 864.3 " 92.20 & 6.580& 0.006& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 13.67 & 663.9 " 87.32 & 4.985& 0.001& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 13.47 & 566.8 " 79.27 & 4.285& 0.087& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 15.11 & 488.3 " 79.17 & 4.986& 0.592& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 14.59 & 403.0 " 70.55 & 5.258& 0.456& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 13.84 & 345.8 " 61.99 & 5.165& 0.267& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 15.42 & 332.3 " 62.20 & 3.532& 0.082& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 16.99 & 357.4 " 59.88 & 3.533& 0.020& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 17.86 & 406.5 " 56.00 & 3.011& 0.000& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 20.46 & 335.4 " 53.31 & 2.537& 0.000& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 22.73 & 281.5 " 62.39 & 2.136& 0.000& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 23.58 & 269.8 " 57.26 & 1.764& 0.000& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 20.88 & 259.0 " 55.74 & 1.562& 0.000& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 17.79 & 258.2 " 66.18 & 1.750& 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 16.17 & 252.8 " 66.86 & 1.328& 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 14.43 & 287.9 " 52.59 & 1.221& 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 17.82 & 311.2 " 43.97 & 0.894& 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 14.63 & 403.2 " 36.89 & 1.077& 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 13.79 & 472.4 " 31.35 & 1.572& 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 18.44 & 491.1 " 26.58 & 1.444& 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 19.20 & 461.4 " 22.47 & 0.843& 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 31.81 & 62.15 & 443.8 " 18.90 & 0.507& 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 96.23 " 78.66 & 342.1 " 16.05 & 0.064& 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 74.78 & 62.01 & 237.1 " 13.90 & 0.091& 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 55.24 & 80.59 & 183.3 " 12.24 & 0.642& 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 40.67 & 54.95 & 161.8 " 10.85 & 0.791& 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 29.98 & 53.19 & 141.1 " 9.873& 0.583& 0.000& 0.000& 30
31 0.000& 0.000& 0.000& 127.3 " 123.5 " 0.331& 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 10.95 & 30.51 & 384.5 " 53.56 & 2.797& 0.060& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 18.44 & 342.1 " 56.63 & 1.750& 0.000& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 96.23 & 127.3 & 864.3 " 109.2 & 8.860& 0.592& 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 13.47 & 123.5 " 9.873& 0.064& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 328.7 & 946.0 &11920 " 1607 & 86.69& 1.79& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 40.79 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 14891 &
Maximum Minimum
Daily 864.3 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2016
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 255.9 " 0.000& 18.54 & 93.66 " 346.7 " 132.5 " 494.3 " 687.3 " 118.4 " 9.435& 0.000& 1
2 0.000& 185.1 " 0.000& 15.73 & 83.56 & 328.3 " 142.2 " 455.1 " 570.5 " 129.1 " 9.410& 0.000& 2
3 0.000& 138.1 " 0.000& 12.65 & 80.32 & 306.2 " 220.6 " 439.8 " 506.9 " 155.8 " 8.430& 0.000& 3
4 0.000& 103.7 & 0.000& 10.66 & 96.40 " 286.7 " 200.2 " 443.9 " 494.2 " 137.1 " 7.225& 0.000& 4
5 0.000& 83.95 & 0.000& 9.469& 103.6 " 293.0 " 164.7 " 464.0 " 447.0 " 118.2 " 7.682& 0.000& 5
6 0.000& 64.75 & 0.000& 9.276& 169.5 " 375.9 " 143.6 " 489.3 " 386.8 " 110.3 " 6.229& 0.000& 6
7 0.000& 48.11 & 0.000& 8.394& 253.5 " 428.5 " 133.7 " 579.0 " 350.6 " 114.8 " 4.670& 0.000& 7
8 0.000& 37.08 & 0.000& 9.006& 278.9 " 484.2 " 135.4 " 815.2 " 355.1 " 115.6 " 5.317& 0.000& 8
9 0.000& 28.31 & 0.000& 10.21 & 305.2 " 483.3 " 231.5 " 895.2 " 359.4 " 127.4 " 3.924& 0.000& 9
10 0.000& 20.79 & 0.000& 9.618& 291.1 " 456.9 " 608.8 " 827.4 " 303.6 " 125.2 " 4.668& 0.000& 10
11 0.000& 14.62 & 0.000& 19.08 & 290.5 " 460.5 " 604.5 " 942.2 " 320.4 " 111.5 " 4.340& 0.000& 11
12 0.000& 10.53 & 0.000& 22.30 & 288.9 " 454.7 " 490.1 " 776.8 " 360.3 " 95.74 & 3.608& 0.000& 12
13 0.013& 6.645& 0.000& 73.31 & 281.7 " 433.9 " 414.1 " 614.2 " 277.9 " 92.30 & 4.056& 0.000& 13
14 0.004& 4.719& 0.000& 185.9 " 274.1 " 367.4 " 322.2 " 511.9 " 226.8 " 84.41 & 3.856& 0.000& 14
15 0.000& 3.232& 0.000& 125.4 " 246.5 " 274.8 " 256.4 " 455.3 " 204.1 " 74.92 & 3.282& 0.000& 15
16 0.000& 2.442& 0.000& 152.7 " 161.8 " 207.2 " 232.4 " 466.7 " 190.6 " 64.01 & 2.497& 0.000& 16
17 0.000& 2.747& 0.000& 174.8 " 102.0 & 210.6 " 655.6 " 471.8 " 175.1 " 52.56 & 1.467& 0.000& 17
18 0.000& 0.859& 0.000& 178.9 " 73.20 & 209.4 " 984.8 " 673.1 " 159.0 " 46.50 & 1.052& 0.000& 18
19 0.003& 0.121& 0.000& 191.8 " 58.17 & 187.9 " 839.9 " 642.7 " 157.1 " 39.23 & 1.075& 0.344& 19
20 20.13 & 0.004& 0.000& 263.3 " 51.94 & 170.6 " 985.4 " 795.4 " 174.2 " 34.16 & 0.538& 18.37 & 20
21 24.55 & 0.003& 0.000& 368.9 " 89.85 & 164.5 " 993.7 "1041 " 160.5 " 30.22 & 0.109& 16.77 & 21
22 8.496& 0.000& 0.000& 318.4 " 315.6 & 169.0 " 990.9 " 794.6 " 158.0 " 25.37 & 0.028& 8.672& 22
23 6.064& 0.000& 0.000& 285.2 " 375.3 " 156.1 " 907.8 " 675.6 " 189.4 " 21.64 & 0.005& 4.271& 23
24 2.828& 0.000& 0.000& 246.3 " 353.2 " 147.2 " 845.0 " 583.0 " 205.7 " 19.02 & 0.000& 4.194& 24
25 18.33 & 0.000& 0.000& 210.7 " 617.0 " 143.4 " 762.7 " 541.7 " 186.1 " 16.70 & 0.000& 1.294& 25
26 5.985& 0.000& 0.000& 156.6 " 603.8 " 136.0 " 649.4 " 501.0 " 160.3 " 15.63 & 0.000& 0.917& 26
27 30.85 & 0.000& 365.8 & 130.6 " 593.2 " 127.9 " 567.4 " 543.1 " 147.1 " 13.72 & 0.000& 0.556& 27
28 34.42 & 0.000& 367.9 " 134.8 " 598.5 " 120.0 " 519.7 " 660.1 " 144.2 " 12.99 & 0.000& 0.003& 28
29 22.50 & 0.000& 182.4 " 117.6 " 519.4 " 119.1 " 490.3 " 602.0 " 145.7 " 11.87 & 0.000& 0.000& 29
30 70.47 & 64.34 & 106.4 " 442.6 " 127.1 " 462.2 " 981.0 " 124.9 " 11.33 & 0.000& 0.000& 30
31 225.5 " 31.52 & 378.8 " 448.8 " 914.6 " 10.31 & 0.000& 31
Mean 15.16 & 34.89 & 32.65 & 119.2 & 273.3 & 272.6 " 501.2 " 648.1 " 277.6 " 68.92 & 3.097& 1.787&
Median 0.000& 3.232& 0.000& 121.5 & 278.9 & 242.7 " 490.1 " 602.0 " 204.9 " 64.01 & 2.889& 0.000&
Maximum 225.5 & 255.9 & 367.9 & 368.9 & 617.0 & 484.2 " 993.7 "1041 " 687.3 " 155.8 & 9.435& 18.37 &
Minimum 0.000& 0.000& 0.000& 8.394& 51.94 & 119.1 " 132.5 " 439.8 " 124.9 " 10.31 & 0.000& 0.000&
Total 470.2 & 1012 & 1012 & 3577 & 8473 & 8178 "15538 "20093 " 8330 " 2136 & 92.90& 55.41&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 188.4 & " ... Relative Uncertainty +/-10%
Ann. Median 94.70 & & ... Relative Uncertainty +/-30%
Annual Total 68970 &
Maximum Minimum
Daily 1041 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2017
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.00& 532.3 " 2059 " 75.11& 30.22& 45.48& 75.75& 772.8 # 524.9 # 362.4 # 51.03& 3.49& 1
2 0.00& 416.9 " 2046 " 72.62& 28.27& 42.04& 97.71& 745.5 # 589.8 # 321.5 # 45.30& 2.19& 2
3 0.00& 159.9 " 2056 " 69.47& 27.09& 40.64& 163.3 # 742.6 # 593.4 # 292.1 # 41.44& 1.49& 3
4 0.00& 76.33& 2075 " 62.70& 27.10& 39.14& 154.3 # 768.6 # 576.5 # 258.0 # 38.56& 3.11& 4
5 0.00& 54.64& 2129 " 59.04& 27.81& 37.86& 173.4 # 604.8 # 527.8 # 223.4 # 33.92& 4.43& 5
6 0.00& 33.99& 1880 " 55.87& 28.77& 36.59& 209.3 # 525.8 # 474.6 # 199.8 # 28.70& 2.19& 6
7 0.00& 30.43& 1674 " 50.05& 28.34& 35.41& 215.5 # 503.4 # 422.7 # 179.3 # 25.60& 0.84& 7
8 0.00& 48.33& 1465 " 46.82& 27.37& 34.84& 217.4 # 471.8 # 385.9 # 164.2 # 25.43& 0.23& 8
9 0.00& 180.7 & 1306 " 43.61& 27.66& 33.58& 219.8 # 550.9 # 357.9 # 149.4 # 23.99& 0.03& 9
10 0.00& 9390 " 1201 " 39.68& 28.76& 32.92& 209.0 # 909.3 # 330.5 # 136.1 # 20.18& 0.00& 10
11 0.00&14660 " 1138 " 36.84& 28.45& 32.68& 205.4 # 1360 # 304.4 # 124.6 # 17.01& 0.00& 11
12 0.00&12941 " 1065 " 36.21& 28.60& 32.43& 186.2 # 2414 # 284.2 # 115.3 # 15.63& 0.00& 12
13 0.00&10839 " 1020 " 35.87& 28.83& 31.72& 174.4 # 1948 # 267.0 # 109.3 & 14.81& 0.00& 13
14 0.00& 9423 " 891.4 " 32.80& 28.78& 36.48& 165.5 # 2125 # 251.6 # 103.8 & 12.92& 0.00& 14
15 0.00&11438 " 746.4 " 32.19& 28.64& 34.83& 158.4 # 2976 # 239.6 # 101.4 # 12.87& 0.00& 15
16 0.00&13624 " 410.8 " 29.43& 30.54& 33.59& 147.8 # 3151 # 224.3 # 93.92# 13.96& 0.00& 16
17 0.00&13597 " 274.9 " 27.36& 31.05& 32.67& 150.3 # 3031 # 209.6 # 87.98& 19.11& 0.00& 17
18 0.00&11402 " 203.6 " 27.83& 31.01& 34.44& 164.4 # 2178 # 195.5 # 81.35& 15.49& 0.00& 18
19 0.00& 8648 " 153.0 " 27.94& 36.04& 33.22& 153.5 # 1679 # 183.7 # 77.43& 16.33& 0.00& 19
20 0.00& 6733 " 124.3 " 27.73& 34.40& 33.38& 160.4 # 1501 # 178.1 # 71.31& 15.57& 0.00& 20
21 0.00& 5395 " 117.6 " 28.32& 41.36& 34.75& 186.0 # 1342 # 177.9 # 67.31& 12.77& 0.00& 21
22 0.00& 4311 " 127.0 " 28.69& 48.23& 42.44& 184.1 # 1352 # 206.4 # 65.63& 11.43& 0.00& 22
23 0.00& 3463 " 158.8 " 28.59& 65.43& 44.52& 188.7 # 1159 # 315.5 # 58.47& 11.59& 0.00& 23
24 0.00& 3121 " 168.0 " 29.63& 70.94& 55.19& 249.8 # 980.4 # 329.4 # 55.45& 10.84& 0.00& 24
25 0.00& 2818 " 146.2 " 29.18& 67.34& 50.04& 334.8 # 858.0 # 456.6 # 53.07& 9.07& 0.00& 25
26 0.00& 2538 " 133.8 " 29.34& 71.10& 51.10& 374.0 # 760.6 # 616.2 # 50.83& 7.76& 0.00& 26
27 0.00& 2302 " 125.1 " 29.77& 69.44& 52.13& 354.7 # 687.8 # 543.9 # 96.09& 7.37& 0.00& 27
28 0.00& 2137 " 111.6 " 30.80& 63.65& 76.22& 348.8 # 628.5 # 641.3 # 86.84& 8.44& 0.00& 28
29 0.00& 105.8 " 33.59& 58.24& 82.96& 381.3 # 585.4 # 569.2 # 71.95& 6.96& 0.00& 29
30 25.09& 94.63" 32.27& 53.27& 71.83& 412.2 # 552.3 # 444.7 # 63.12& 5.29& 0.00& 30
31 267.9 & 84.93& 49.32& 524.2 # 524.1 # 56.16& 0.00& 31
Mean 9.453&5368 & 816.1 & 39.64 & 40.19 & 42.50 & 223.9 &1238 # 380.8 # 128.3 & 19.31 & 0.580&
Median 0.000&3292 & 410.8 & 32.53 & 30.53 & 36.53 & 186.2 & 858.0 # 344.2 # 96.08 & 15.53 & 0.000&
Maximum 267.9 &14660 & 2129 & 75.11& 71.10& 82.96& 524.2 & 3151 # 641.3 # 362.4 & 51.03& 4.43&
Minimum 0.000& 30.43 & 84.92 & 27.35 & 27.09 & 31.72 & 75.74 & 471.8 # 177.9 # 50.83 & 5.292& 0.000&
Total 293.0&150322 & 25299 & 1189 & 1246 & 1275 & 6941 & 38395 # 11424 # 3978 & 579.3& 18.0&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 660.1 & " ... Relative Uncertainty +/-10%
Ann. Median 65.62 & # ... Relative Uncertainty +/-15%
Annual Total 240962 & & ... Relative Uncertainty +/-30%
Maximum Minimum
Daily 14660 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2018
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 10.25 & 55.99 & 0.000& 0.000& 68.05 & 512.1 " 720.2 "1220 " 58.96 & 14.39 & 0.000& 1
2 0.000& 9.860& 106.5 & 0.000& 0.000& 52.14 & 452.3 "1484 " 843.7 " 57.86 & 13.21 & 0.000& 2
3 0.000& 7.972& 63.12 & 0.000& 0.000& 40.92 & 651.0 "1352 " 604.9 " 54.62 & 12.10 & 0.000& 3
4 0.000& 5.617& 40.18 & 0.000& 0.000& 33.14 & 655.5 "3357 " 496.3 " 60.45 & 9.637& 0.000& 4
5 0.000& 4.745& 26.81 & 0.000& 0.000& 36.83 & 856.2 "4123 " 451.4 " 79.32 & 7.810& 0.000& 5
6 0.000& 6.018& 17.80 & 0.000& 0.000& 39.49 &1216 "5852 " 416.2 " 85.14 & 7.616& 0.000& 6
7 0.000& 3.230& 13.45 & 0.000& 0.000& 78.47 &1129 "3208 " 364.7 " 87.36 & 7.861& 0.000& 7
8 0.000& 2.193& 10.29 & 0.000& 0.000& 111.2 "1291 "2099 " 353.5 " 233.2 " 7.328& 0.000& 8
9 0.000& 3.397& 8.108& 0.000& 0.000& 75.34 & 862.0 "2045 " 339.6 " 212.3 " 6.204& 0.000& 9
10 0.000& 1.596& 4.352& 0.000& 0.000& 68.45 & 621.1 "2898 " 311.8 " 151.4 " 6.162& 0.000& 10
11 0.000& 1.654& 3.138& 0.000& 0.000& 112.7 & 515.8 "3706 " 288.2 " 116.6 " 5.501& 0.000& 11
12 0.000& 1.253& 3.030& 0.000& 0.000& 121.6 " 438.5 "3321 " 274.1 " 93.19 & 3.954& 0.000& 12
13 0.000& 0.774& 3.008& 0.000& 0.000& 283.7 " 381.6 "1944 " 261.8 " 91.59 & 3.851& 0.000& 13
14 0.000& 0.305& 3.401& 0.000& 0.000& 546.0 " 356.9 "1480 " 252.3 " 95.91 & 3.079& 0.000& 14
15 0.747& 0.083& 2.269& 0.000& 0.000& 336.8 " 422.1 "1372 " 235.3 " 88.41 & 3.595& 0.000& 15
16 251.7 & 0.009& 1.448& 0.000& 0.000& 234.1 " 447.6 "1231 " 214.3 " 87.99 & 2.095& 0.000& 16
17 483.3 " 0.000& 0.974& 0.000& 0.000& 182.6 " 491.4 "1216 " 195.9 " 78.56 & 2.242& 0.000& 17
18 444.6 " 0.000& 0.386& 0.000& 0.000& 159.8 " 612.7 " 979.0 " 179.3 " 73.91 & 1.671& 0.000& 18
19 404.6 " 0.000& 0.297& 0.000& 0.000& 162.2 " 534.7 " 788.5 " 164.5 " 67.84 & 0.800& 0.000& 19
20 425.1 " 0.000& 0.151& 0.000& 0.000& 153.1 " 450.5 " 687.2 " 153.3 " 63.49 & 0.365& 0.000& 20
21 245.0 " 0.000& 0.070& 0.000& 0.000& 134.8 " 380.1 " 621.9 " 143.0 " 55.52 & 0.285& 0.000& 21
22 148.1 " 0.000& 0.070& 0.000& 0.000& 162.6 " 387.8 " 630.5 " 131.3 " 48.37 & 0.444& 0.000& 22
23 95.84 & 0.000& 0.012& 0.000& 0.000& 184.9 " 515.1 " 568.5 " 119.1 " 43.73 & 0.093& 0.000& 23
24 67.07 & 0.000& 0.000& 0.000& 0.007& 155.8 " 602.9 " 516.9 " 106.4 " 39.73 & 0.206& 0.000& 24
25 48.39 & 0.000& 0.000& 0.000& 6.132& 132.1 "1034 " 501.7 " 93.12 & 33.20 & 0.232& 0.000& 25
26 39.76 & 16.21 & 0.000& 0.000& 13.95 & 115.9 "1314 " 464.4 " 84.54 & 30.14 & 0.044& 0.000& 26
27 33.23 & 41.79 & 0.000& 0.000& 44.83 & 110.4 "1108 " 412.6 " 77.64 & 26.28 & 0.003& 0.000& 27
28 24.53 & 14.93 & 0.000& 0.000& 33.37 & 116.9 "1716 " 454.2 " 70.77 & 24.87 & 0.000& 0.000& 28
29 17.23 & 0.000& 0.000& 67.91 & 133.4 "1774 " 833.9 " 66.25 & 21.94 & 0.000& 0.000& 29
30 12.76 & 0.000& 0.000& 101.1 & 164.2 "1046 " 737.3 " 62.65 & 18.59 & 0.000& 0.000& 30
31 11.19 & 0.000& 91.49 & 774.8 " 986.0 " 16.73 & 0.000& 31
Mean 88.82 & 4.710& 11.77 & 0.000& 11.57 & 143.6 & 759.8 "1632 " 285.9 & 74.11 & 4.026& 0.000&
Median 11.19 & 1.425& 1.448& 0.000& 0.000& 126.8 & 612.7 "1216 " 224.8 & 63.49 & 2.660& 0.000&
Maximum 483.3 & 41.79 & 106.5 & 0.000& 101.1 & 546.0 &1774 "5852 "1220 & 233.2 & 14.39 & 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 33.14 & 356.9 " 412.6 " 62.65 & 16.73 & 0.000& 0.000&
Total 2753 & 131.8 & 364.9 & 0.00& 358.8 & 4308 &23555 "50599 " 8577 & 2297 & 120.7 & 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 254.9 & " ... Relative Uncertainty +/-10%
Ann. Median 13.95 & & ... Relative Uncertainty +/-30%
Annual Total 93068 &
Maximum Minimum
Daily 5852 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2019
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 380.7 " 177.0 " 539.0 " 29.73 & 3.448& 0.000& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 332.3 " 160.9 "1005 " 26.96 & 4.219& 0.000& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 258.9 " 143.0 "1232 " 24.57 & 3.078& 0.000& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 261.3 " 130.1 "1092 " 22.56 & 3.133& 0.000& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 613.3 " 128.2 " 859.6 " 19.51 & 3.749& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 852.0 " 130.7 " 649.0 " 20.91 & 2.579& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 819.3 " 173.9 " 518.7 " 19.64 & 2.600& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 861.5 " 256.4 " 398.1 " 17.31 & 1.821& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 664.0 " 318.7 " 315.0 " 15.39 & 1.338& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 539.3 " 315.5 " 260.9 " 14.17 & 2.005& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 465.0 " 257.8 " 222.0 " 13.43 & 1.194& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 383.4 " 209.0 " 191.8 " 14.86 & 0.446& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 314.4 " 175.8 " 169.2 " 14.09 & 0.255& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 267.0 " 162.2 " 148.7 " 13.06 & 0.228& 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 35.15 & 233.5 " 260.2 " 130.8 " 12.54 & 0.087& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 82.45 & 208.7 " 408.9 " 115.7 " 11.92 & 0.019& 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 83.22 & 192.4 " 533.4 " 102.5 " 11.14 & 0.000& 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 88.88 & 182.9 " 571.7 " 92.26 & 9.674& 0.000& 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 79.96 & 189.3 " 618.2 " 84.49 & 8.783& 0.000& 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 70.46 & 238.3 " 643.2 " 85.79 & 8.467& 0.000& 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 64.26 & 349.8 " 543.1 " 75.23 & 7.145& 0.000& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 62.18 & 380.3 " 403.3 " 66.35 & 6.805& 0.000& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 76.07 & 463.3 " 356.1 " 60.82 & 5.912& 0.000& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 120.1 & 473.7 " 416.0 " 55.79 & 4.807& 0.000& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 148.8 " 390.1 " 364.7 " 50.75 & 4.123& 0.000& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 148.2 " 352.0 " 354.1 " 47.37 & 4.507& 0.000& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 336.8 " 310.4 " 373.9 " 43.38 & 4.139& 0.000& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 538.6 " 276.5 " 293.9 " 39.41 & 3.617& 0.000& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 447.3 " 249.3 " 241.3 " 36.35 & 2.033& 0.000& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 395.9 " 215.5 " 233.8 " 32.94 & 2.972& 0.000& 0.000& 30
31 0.000& 0.000& 0.000& 196.3 " 367.1 " 3.484& 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 92.62 & 384.3 " 313.6 " 290.7 & 12.20 & 1.007& 0.000&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 48.67 & 332.3 " 293.9 " 123.2 & 11.92 & 0.053& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 538.6 & 861.5 " 643.2 "1232 & 29.73 & 4.219& 0.000&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 182.9 " 128.2 " 32.94 & 2.033& 0.000& 0.000&
Total 0.00& 0.00& 0.00& 0.00& 0.00& 2778 &11916 " 9723 " 8723 & 378.3 & 30.20& 0.00&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 91.91 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 33550 &
Maximum Minimum
Daily 1232 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2020
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 106.8 " 48.49 & 48.77 & 24.91 & 0.803& 0.039& 1
2 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 158.5 " 45.06 & 57.77 & 21.09 & 1.831& 0.024& 2
3 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 193.7 " 44.93 & 58.30 & 19.82 & 1.554& 0.001& 3
4 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 154.1 " 44.29 & 49.73 & 18.88 & 0.716& 0.001& 4
5 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 141.8 " 44.69 & 44.76 & 18.19 & 0.959& 0.000& 5
6 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 131.6 " 45.57 & 43.64 & 16.38 & 1.107& 0.000& 6
7 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 109.6 " 44.77 & 44.82 & 14.01 & 1.340& 0.000& 7
8 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 90.03 & 52.78 & 62.92 & 12.15 & 1.052& 0.000& 8
9 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 74.74 & 63.81 & 67.17 & 11.54 & 1.937& 0.000& 9
10 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 64.29 & 113.5 & 87.25 & 10.54 & 5.243& 0.000& 10
11 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 57.85 & 246.1 " 220.1 " 9.175& 3.100& 0.000& 11
12 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 52.71 & 222.0 " 156.6 " 8.265& 3.765& 0.000& 12
13 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 47.05 & 360.3 " 113.1 " 7.299& 4.797& 0.000& 13
14 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 50.76 & 391.5 " 86.07 & 6.135& 11.00 & 0.000& 14
15 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 76.06 & 287.2 " 68.07 & 5.373& 8.983& 0.000& 15
16 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 88.28 & 251.0 " 55.69 & 5.222& 10.53 & 0.000& 16
17 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 83.53 & 322.1 " 47.32 & 3.785& 12.35 & 0.000& 17
18 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 192.5 " 276.2 " 40.15 & 3.386& 13.82 & 0.000& 18
19 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 238.6 " 240.9 " 33.71 & 3.939& 13.07 & 0.000& 19
20 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 197.2 " 256.5 " 30.24 & 2.554& 10.29 & 0.000& 20
21 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 216.7 " 233.0 " 28.62 & 1.956& 8.454& 0.000& 21
22 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 177.2 " 183.0 " 28.78 & 1.534& 6.623& 0.000& 22
23 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 137.3 " 144.9 " 26.23 & 1.414& 7.148& 0.000& 23
24 0.000& 0.000& 0.000& 0.000& 0.000& 0.092& 112.9 " 118.3 " 22.76 & 1.358& 5.924& 0.000& 24
25 0.000& 0.000& 0.000& 0.000& 0.000& 16.18 & 93.38 & 98.61 " 20.39 & 1.227& 2.554& 0.000& 25
26 0.000& 0.000& 0.000& 0.000& 0.000& 23.45 & 78.89 & 84.60 & 23.19 & 1.309& 3.082& 0.000& 26
27 0.000& 0.000& 0.000& 0.000& 0.000& 22.87 & 68.68 & 74.20 & 29.21 & 0.574& 1.538& 0.000& 27
28 0.000& 0.000& 0.000& 0.000& 0.000& 23.04 & 64.80 & 66.02 & 46.79 & 0.336& 0.565& 0.000& 28
29 0.000& 0.000& 0.000& 0.000& 0.000& 27.77 & 60.60 & 59.12 & 34.62 & 0.095& 0.467& 0.000& 29
30 0.000& 0.000& 0.000& 0.000& 94.13 & 55.74 & 53.77 & 31.45 & 0.022& 0.569& 0.000& 30
31 0.000& 0.000& 0.000& 52.33 & 47.66 & 0.015& 0.000& 31
Mean 0.000& 0.000& 0.000& 0.000& 0.000& 6.919& 110.6 & 147.2 & 56.94 & 7.501& 4.840& 0.002&
Median 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 90.03 & 98.61 & 45.80 & 5.222& 3.091& 0.000&
Maximum 0.000& 0.000& 0.000& 0.000& 0.000& 94.13 & 238.6 & 391.5 & 220.1 & 24.91 & 13.82 & 0.039&
Minimum 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 47.05 & 44.29 & 20.39 & 0.015& 0.467& 0.000&
Total 0.000& 0.000& 0.000& 0.000& 0.000& 207.5 &3429 &4565 &1708 & 232.5 & 145.1 & 0.065&
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 28.11 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 10288 &
Maximum Minimum
Daily 391.5 & 0.000&
Department of Water and Environmental Regulation HYDAY V139 Output 18/04/2021
Site 615062 Avon River - Northam Weir Year 2021
VarFrom 10.00 Stage - SL in Metres Table Type Total
VarTo 151.00 Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day
1 0.000& 0.000& 0.000& 5.958& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 1
2 0.000& 0.000& 0.000& 6.675& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 2
3 0.000& 0.000& 277.3 & 5.203& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 3
4 0.000& 0.000&1092 " 4.488& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 4
5 0.000& 0.000& 793.4 " 5.259& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 5
6 0.000& 0.000& 746.1 " 4.734& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 6
7 0.000& 0.000& 691.6 " 3.941& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 7
8 0.000& 0.000& 523.1 " 2.476& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 8
9 0.000& 0.000& 265.2 " 0.744& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 9
10 0.000& 0.000& 169.6 " 0.598& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 10
11 0.000& 0.000& 122.1 " 2.936& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 11
12 0.000& 0.000& 102.9 " 6.448& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 12
13 0.000& 0.000& 86.01 & 2.170& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 13
14 0.000& 0.000& 67.52 & 3.046& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 14
15 0.000& 0.000& 53.92 & 3.735& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 15
16 0.000& 0.000& 42.50 & 4.154& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 16
17 0.000& 0.000& 34.48 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 17
18 0.000& 0.000& 30.48 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 18
19 0.000& 0.000& 27.71 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 19
20 0.000& 0.000& 21.66 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 20
21 0.000& 0.000& 17.68 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 21
22 0.000& 0.000& 14.36 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 22
23 0.000& 0.000& 9.581& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 23
24 0.000& 0.000& 9.869& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 24
25 0.000& 0.000& 11.03 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 25
26 0.000& 0.000& 11.10 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 26
27 0.000& 0.000& 13.98 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 27
28 0.000& 0.000& 13.86 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 28
29 0.000& 11.21 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 29
30 0.000& 7.910& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 30
31 0.000& 6.559& [ ] [ ] [ ] [ ] [ ] 31
Mean 0.000& 0.000& 170.1 & 3.910& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Median 0.000& 0.000& 30.48 & 4.048& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Maximum 0.000& 0.000&1092 & 6.675& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Minimum 0.000& 0.000& 0.000& 0.598& [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Total 0.000& 0.000&5276 & 62.56 & [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
Missing Days 0 0 0 14 31 30 31 31 30 31 30 31
Summaries ------------------ Notes -------------------
--------- All recorded data is continuous and reliable
except where the following tags are used...
Annual Mean 50.36 & " ... Relative Uncertainty +/-10%
Ann. Median 0.000& & ... Relative Uncertainty +/-30%
Annual Total 5338 & [ ... Not Available
Missing Days 259
Maximum Minimum
Daily 1092 & 0.000&